ZEROBASEONE: Current Members, Original Lineup, Music and 2026 Guide
Group profile
Current members Sung Hanbin, Kim Jiwoong, Seok Matthew, Kim Taerae and Park Gunwook Original members Zhang Hao, Sung Hanbin, Seok Matthew, Ricky, Park Gunwook, Kim Taerae, Kim Gyuvin, Kim Jiwoong and Han Yujin Formation Boys Planet Original debut July 10, 2023 Current status Active five-member chapter after the original project contracts concluded Fandom ZEROSE Bottom line: ZEROBASEONE are five now and were nine before. A useful hub has to preserve both truths without turning grief into a demand that nobody move.
Quick file
ZEROBASEONE currently consists of SUNG HANBIN, KIM JIWOONG, SEOK MATTHEW, KIM TAERAE and PARK GUNWOOK. The group debuted July 10, 2023 with nine members formed through Boys Planet. WakeOne announced the five-member continuation on February 12, 2026.
Original lineup
The original nine were Zhang Hao, Sung Hanbin, Seok Matthew, Ricky, Park Gunwook, Kim Taerae, Kim Gyuvin, Kim Jiwoong and Han Yujin. Ranking order mattered at formation, but a career guide should eventually graduate from finale numbers into the musical and operational work each member performed.
What the name means
ZEROBASEONE describes a journey from zero to one and a commitment to share that beginning with fans. The name survived a major lineup transition. That continuity can honor shared history, but it also requires WakeOne to explain what “one” means when four original members no longer operate inside the group.
Boys Planet made the group
Mnet’s Boys Planet assembled the lineup through public voting and broadcast storytelling. The show created recognition, rivalries, edits and a deadline before the debut music existed. Survival history explains formation; it should not permanently outrank the catalog the nine members built afterward.
A project contract had an ending
ZEROBASEONE launched as a two-and-a-half-year project. Fans always knew a deadline existed, but foreknowledge does not make attachment fake or transition painless. The business model sells intimacy and urgency while companies retain the authority to decide whether collaboration can continue.
Youth in the Shade
The July 2023 debut EP introduced In Bloom and a bright anxiety about beginnings. The group’s early strength was making polished freshness feel pressed against a clock. Flowers and youth were not innocent decoration; they carried the knowledge that every opening already contained an ending.
In Bloom and Take on Me
In Bloom sampled the famous synthesizer line from a-ha’s Take on Me. Naming that source strengthens the song’s file. The members brought new vocal distribution, choreography and survival-show context, but the melodic recognition did not appear from nowhere.
Melting Point
The second EP deepened winter romance and group color. Crush used heavier rhythm and performance force, while other tracks preserved warmer vocal appeal. The era proved that one debut mood could expand without turning nine members into interchangeable pastel witnesses.
You Had Me at HELLO
Feel the POP and the surrounding 2024 material leaned into playful brightness. Cheerfulness can be technical: breath, timing and camera judgment still matter. A large group has to distribute charm without making every section feel like another member entering the same commercial.
Cinema Paradise
GOOD SO BAD and KILL THE ROMEO made film language part of the era. One official MV and one Studio Choom performance require separate Reacts because narrative editing and complete performance geometry answer different questions. The exact video ID protects that distinction.
GOOD SO BAD
GOOD SO BAD turned romantic contradiction into glossy forward motion. The nine-member arrangement relies on vocal contrast and a chorus that feels larger than the confession. Its current value is historical as well as musical: it belongs to the original lineup, not the five-member restart.
KILL THE ROMEO
KILL THE ROMEO rejects a tragic script while still enjoying theatrical danger. Studio Choom removes much of the plot and exposes formation traffic. Watch how nine bodies create corridors, centers and paired reactions without allowing scale to swallow individual responsibility.
BLUE and two official objects
BLUE has an official MV and a Studio Choom performance. The existing React compares both, so the tracker correctly keeps two official IDs on one article. A third unrelated video must not silently enter the relationship merely because it appears in old content.
Doctor Doctor
Doctor! Doctor! uses romantic ailment language and bright visual control. The existing React is already rebuilt to the editorial floor. The hub connects it without creating another page whose only purpose is making a completed review look new.
NOW OR NEVER
NOW OR NEVER arrived through Japanese activity and framed homecoming with urgency. The title sounds like the project contract speaking through a love song. Japanese localization belongs in the group chronology as a distinct operating lane, not a secondary footnote.
RE-FLOW and the nine-member closing period
The original project period extended long enough for a final album and encore activity through March 2026. Extension did not automatically mean permanent renewal. Fans received more time while companies continued negotiating separate futures, which made celebration and anticipatory grief occupy the same calendar.
The final nine-member encore
The March encore became an emotional closing event for the original lineup. Tears do not prove private promises, and fans should not demand lifelong access to those relationships. They do prove the project created real professional and emotional consequences that contract language alone cannot contain.
February 12 changed the canonical status
WakeOne announced SUNG HANBIN, KIM JIWOONG, SEOK MATTHEW, KIM TAERAE and PARK GUNWOOK would continue as ZEROBASEONE. Zhang Hao, Ricky, Kim Gyuvin and Han Yujin concluded their project contracts and prepared activities through Yuehua. The site uses those exact categories.
Five current, four former
Former is a current-status word, not an insult and not an eraser. The four former members keep every nine-member song and React they performed. The five current members inherit that history and the new five-member catalog. Participation-aware routing prevents both sides from being rewritten.
Agency map after transition
Kim Taerae was already under WakeOne. Seok Matthew and Park Gunwook signed with WakeOne. Sung Hanbin and Kim Jiwoong continue group work while retaining separate agency relationships for individual activity. A multi-agency group requires clearer coordination, not rumors filling the gaps.
Yuehua four moved together
Zhang Hao, Ricky, Kim Gyuvin and Han Yujin returned to Yuehua and prepared a new group route together. That proximity does not make the new act a ZEROBASEONE unit. Their profiles can connect both careers without forcing one brand to own every future release.
TOP 5 is the restart object
TOP 5 is the first audited MV built around the five continuing members. Its title risks sounding defensive, but the song has to do more than count. It must make a new vocal and formation system feel chosen rather than merely what remained after four departures.
Five-person geometry
Five allows a stable center and paired wings. It also removes the visual density that defined many nine-member stages. Old arrangements need rebuilding rather than four empty spaces. The current lineup’s challenge is to preserve legacy without performing absence as a permanent concept.
SLAM DUNK belongs to nine
SLAM DUNK uses the original nine-member lineup and a sports frame for collective momentum. Its existing React is below the required floor and therefore gets repaired in place. The current five can own the history, but the relationship row must still credit all nine performers.
Sung Hanbin as current leader
SUNG HANBIN remains the group’s leader. Leadership across a split means navigating continuity, not taking personal responsibility for every agency negotiation. His dance clarity and public communication matter; WakeOne still owns management decisions.
Kim Jiwoong’s persistence
KIM JIWOONG entered with previous idol attempts and acting experience. Continuing the name at an older age than most project-group peers fits a career already shaped by restarts. Persistence deserves analysis without turning hardship into a requirement for legitimacy.
Seok Matthew’s bridge
SEOK MATTHEW’s bright performance energy and international background help the current group communicate across markets. Language ability is useful labor, but it should not make him the unpaid translation department for every company announcement.
Kim Taerae’s vocal continuity
KIM TAERAE carries a recognizable melodic tone from the nine-member catalog into the five-member era. Continuity is not repetition. New arrangements should give that voice different structural work rather than using it only to reassure fans that the old sound survived.
Park Gunwook’s expansion
PARK GUNWOOK combines rap, dance and vocals, with Placebo providing a principally focused performance object. The five-member system creates more room for his versatility. More room should lead to sharper decisions, not simply more seconds.
Zhang Hao after center
ZHANG HAO won Boys Planet and centered the original debut. His violin training, vocals and later individual work support a shared artist/member profile. Departing the project contract does not revoke what first place built or force the current group to remain nine forever.
Ricky after the project
RICKY’s visual confidence and distinctive tone made him unusually identifiable inside nine. His former-member profile keeps that history while following Yuehua activity separately. Search continuity should not depend on pretending the contract outcome never happened.
Kim Gyuvin after the project
KIM GYUVIN’s scale, movement and variety timing contributed to the original chemistry. His next group work should be analyzed on its own terms while the ZEROBASEONE page remains the accurate archive of 2023–2026 participation.
Han Yujin after the project
HAN YUJIN debuted as the original maknae while still a minor. Adults controlled the survival show, contract and promotional system. His performance growth deserves attention without romanticizing a deadline young artists did not design.
Zhang Hao’s Artist threshold
ZHANG HAO has principally credited individual work, including an original soundtrack, so one shared canonical page can serve Artist and former-member roles. That is not a duplicate identity. It is one person with two verified career lanes.
Kim Jiwoong’s Artist threshold
KIM JIWOONG’s acting career gives his shared profile a legitimate Artist function beyond group membership. The page should track credited roles and releases without creating separate biographies for actor and idol versions of the same person.
Contract grief without ownership
Fans can mourn the original lineup. Mourning does not grant veto power over five members choosing to continue or four choosing another path. The fair question is whether agencies communicated clearly and supported transition, not whether artists preserved a fan’s preferred frozen image.
MRT responsibility lens
Moral reconation therapy asks who controls choices and who is avoiding responsibility. Here, companies negotiated contracts and monetized the deadline. Members chose among available paths. Fans control their response. Blame becomes useful only when it follows actual authority rather than the person easiest to tag.
Confucian hierarchy lens
Age and leadership shape communication inside Korean groups, but company authority and contractual power remain separate. SUNG HANBIN can lead peers without controlling four agencies. Respect cannot become a polite word used to hide where executives make consequential decisions.
Buddhist impermanence lens
The original nine-member form ended. Impermanence does not make it meaningless. Clinging to one lineup can turn love into refusal to see the people still moving. The archive preserves the nine; the current hub also allows five to exist now.
The static-card rule
The hub uses five current-member cards first, then four former-member cards with explicit status. Every destination uses its own local portrait. No endless carousel hides the transition or allows a group photo to pretend nine individual pages share one face.
The image rule
The hub uses a current five-member photograph. Original-era Reacts use exact nine-member video stills. TOP 5 uses its five-member still. Member pages use real local portraits across featured, hero, card and social roles. Image identity follows the object.
The tracker rule
Exact YouTube IDs separate titles, mirrors and performance objects. TOP 5, SLAM DUNK, KILL THE ROMEO and GOOD SO BAD each need one canonical React. BLUE intentionally maps two official objects to one comparison article. Participation follows release date.
International followability
Korean, Japanese and agency-specific notices split the record across platforms. The hub centralizes dated evidence, but long-term responsibility remains with WakeOne and partner agencies. Fans should not need contract-law detective work to identify the current lineup.
Fandom file: ZEROSE in the five-member chapter
ZEROSE is not leftover branding from the nine-member contract. It is the fandom identity attached to ZEROBASEONE, and the official Japanese operation carried that identity into the five-member chapter. ZEROSE JAPAN resumed service for a new season on May 1, 2026, with monthly and annual membership routes. That matters because the archive should not treat fans as if they vanished when four project contracts ended.
The practical rule is simple: label every video and React with the lineup that actually appears, keep the original nine-member history visible, and let ZEROSE follow the current five without rewriting the four former members out of the record. Contract accuracy and fandom continuity can exist in the same sentence.
RaeRae’s read
ZEROBASEONE did not become fake when nine became five. The original project was real, the loss was real and the continuation is real. I want TOP 5 to prove the restart through arrangement and chemistry, not spend every chorus asking permission to exist.
What the next release updates
Confirm whether the object is current five-member or archival nine-member work. Update only participating profiles, exact-video tracker, current chronology and requested React. Do not backdate new work to former members or remove old work from them.
Bottom line
ZEROBASEONE are an active five-member group in August 2026 with a complete nine-member project history. The archive must hold both truths. The next chapter succeeds when five members build a new operating sound without requiring fans to erase Zhang Hao, Ricky, Kim Gyuvin or Han Yujin.
Current five members
Original members whose project contracts concluded
Official video tracker: exact-video Reacts
Sources and receipts
- WakeOne future-activities notice
- WakeOne official artist page
- ZEROBASEONE Japan official site
- Yonhap five-member continuation report
- ZEROBASEONE official YouTube
How to hear the nine-member catalog now
Start with the record that existed when each song arrived. The original nine were not a prologue waiting to be corrected by the current five, and the current five are not a tribute act carrying somebody else’s name. In Bloom establishes the first vocal map; Crush tests force; Feel the POP tests lightness; GOOD SO BAD and KILL THE ROMEO test cinematic scale; BLUE and the closing period reveal how sweetness can carry pressure. Listen once for the full arrangement, once for each member’s entrances and exits, and once for the work happening outside center. That sequence catches more truth than a line-count chart or a montage built to prove a favorite was mistreated.
How to hear the five-member catalog
TOP 5 begins a different arrangement problem. Five members create clearer individual exposure, fewer places to hide a rough handoff and more responsibility per voice. A stable center with two wings can look immediately readable, but readability is not the same as chemistry. The current group needs bridges that use contrasting tones, rap that changes pressure, and choreography that treats reduced scale as an advantage. I do not want four imaginary silhouettes haunting every formation. I want the five performers to build shapes that would make no sense for nine, because that is how continuation becomes creative instead of administrative.
Line distribution is evidence, not a verdict
Seconds can reveal a pattern, but they cannot measure harmony, formation traffic, transition difficulty, facial continuity or the pressure of opening and closing a section. A short line may launch the hook; a longer line may repeat material with less technical risk. The useful audit asks whether the arrangement gives each member consequential work and whether that work changes across releases. For ZEROBASEONE, compare roles inside the original nine before comparing those totals with the current five. The denominator changed. Treating both systems as one spreadsheet produces dramatic numbers and weak analysis.
The four former members belong in every original-era receipt
Zhang Hao, Ricky, Kim Gyuvin and Han Yujin remain connected to every verified ZEROBASEONE object they performed. Their status changed; the footage did not. Removing them from old relationships would falsify the archive, while attaching them to TOP 5 would falsify the restart. This is why the site routes by participation instead of mood. Zhang Hao’s shared artist and former-member page can follow solo or new-group work. Ricky, Gyuvin and Yujin can gain new career relationships as releases arrive. None of that requires a duplicate biography or an argument that one future cancels another.
What WakeOne owes international fans
A continuation this complicated needs one dated, multilingual source of truth: current lineup, agency roles, release schedule, touring status and links to each member’s individual lane. Fans should not have to compare screenshots, machine translations and disappearing social posts to understand who is active. WakeOne made the announcement and operates the group brand, so clarity belongs to management. Partner agencies should publish matching notices instead of allowing silence to become rumor fuel. International fans will do translation and archival work anyway; companies should stop treating that unpaid labor as the communication plan.
The archive cannot become a breakup shrine
Preservation matters, but a hub that only mourns nine eventually fails everybody. The original members deserve accurate credits, strong Reacts and visible profile routes. The current members deserve coverage that judges new music on its own arrangement. Former members deserve pages that follow what they do next instead of freezing them at the encore. Grief can sit in the chronology without controlling the navigation. Static cards make that balance visible: five current members first, four former members clearly labeled, then exact-video Reacts attached to the lineup that actually appears.
The practical update rule
When a new ZEROBASEONE song arrives, verify the upload, release date, participating lineup and published credits before writing. Build or repair one in-depth React for that exact object. Add the card to the group hub and only to participating profiles. Confirm the featured image, hero, landing card, Open Graph image and Twitter image all use the same local asset, while every post keeps a distinct asset of its own. Then test desktop and mobile rendering, especially the finite card grid and video wrapper. The rule sounds fussy because it prevents the quiet errors that make a music archive impossible to trust.
React image cards
Static cards route each exact official upload to its own in-depth React. Every card repeats that React’s featured and hero image so the archive stays visually traceable.
Doctor! Doctor! exact-video tracker update
The warm pre-release belongs in ZEROBASEONE’s nine-member chronology because its compact R&B arrangement gives every voice a defined treatment-room role. Exact official video 9BXF8gSpEwY: read the RaeRae React.