Bottom line

CIX was formed by C9 Entertainment with BX, Seunghun, Yonghee, Bae Jinyoung and Hyunsuk and debuted in July 2019. Bae Jinyoung departed when his contract ended in August 2024; BX, Seunghun, Yonghee and Hyunsuk continued through 2025. On April 29, 2026, C9 announced that team activities would stop as the remaining contracts ended.

The archive does not call the five-member past current, and it does not erase the four-member final chapter.

What CIX means

CIX is read as Complete in X: five unknown quantities meeting to become complete. The name became complicated after a member’s departure, but the musical identity survived through controlled R&B, psychological storytelling and voices arranged for tension rather than noise.

A lineup equation can change without making the earlier answer false.

The five-member foundation

BX led and rapped; Seunghun carried major vocal peaks; Yonghee supplied a clear measured color; Bae Jinyoung connected center, dance and vocal intensity; Hyunsuk added lower weight and long movement lines.

The exact January 2024 wall.live upload includes all five.

Movie Star

HELLO Chapter 1: Hello, Stranger debuted CIX with “Movie Star,” a sleek song whose confidence was shadowed by the group’s larger Divine Comedy-inspired world. The sound was mature without demanding that rookies perform empty hardness.

Atmosphere worked because the members were readable inside it.

Numb and Jungle

HELLO Chapter 2 and Chapter 3 moved through school pressure, numbness, desire and infernal imagery. “Jungle” made temptation feel architectural, using dense sets and controlled choreography rather than merely applying darkness as a filter.

The concept series rewarded sequence.

Cinema and Wave

“Cinema” opened the palette into bright romance without discarding detailed harmonies; “Wave” carried that warmth into travel and motion. CIX could make lightness feel considered because the darker work had established contrast.

Range should change temperature, not identity.

458 and the OK era

OK Episode 1: OK Not and “458” returned to desire as acceleration and danger. Save Me, Kill Me then gave despair and connection a direct school-age narrative.

The catalogue’s emotional stakes stayed unusually specific.

0 or 1

Released January 24, 2024, the single album pairs retro-vocoder dance pop “Lovers or Enemies” with the piano-and-strings devotion of “My name is shadow.” The wall.live performance places both songs in one exact file.

One upload contains two contrasting arguments about love.

The five-person wall.live file

The performance was published January 29, 2024 during the final five-member era. All five sing and appear, so every founding profile receives the exact React card regardless of later status.

Credits follow the recording date.

Bae Jinyoung’s departure

C9 announced that Bae Jinyoung’s contract ended August 1, 2024 and that CIX would continue with BX, Seunghun, Yonghee and Hyunsuk. His Wanna One, CIX and later solo/acting work remain one canonical person profile.

Departure changes the present, not the old frame.

THUNDER FEVER

The four-member CIX returned in January 2025 with “THUNDER.” The album also re-recorded “Lovers or Enemies” and “My name is shadow” for the four-member structure, creating distinct later evidence rather than overwriting the original five-person performances.

A redistributed recording is not the same artifact.

Go Together

The September 2025 full album and “Wonder You” became the final Korean group release under C9. Its brighter connection language gave the catalogue a later destination beyond the infernal and purgatorial chapters.

The final chapter deserves inclusion beyond one comeback headline.

April 2026 end of team activity

C9 said the members and company had concluded that team operation had to stop. BX and Seunghun’s contracts ended April 30; Yonghee enlisted May 11 as his contract ended; Hyunsuk’s contract ended May 31 after drama support.

C9 also left open communication around the brand, but that is not evidence of an active group or scheduled reunion.

Rant: do not call every ending a hiatus until nobody can find the truth

Soft wording can comfort fans while destroying an archive. “The brand may return” and “team activities stopped” can both be recorded; only the second describes August 2026 reality. Hope belongs in the future, not in a false status field.

Affection does not require administrative fiction.

RaeRae take

CIX were strongest when polished surfaces exposed uncomfortable feeling. The wall.live file proves that with almost no visual machinery: five voices move from becoming somebody’s shadow to demanding a binary answer.

The contrast is the whole review.

Image and routing standard

The hub, five profiles and React use separate real local official or broadcast images with full metadata, attribution, SEO and FileBird folder 25 placement.

All five exact performers receive the 2024 card.

CIX group facts

• Name: CIX, short for Complete in X
• Company: C9 Entertainment during the group’s active run
• Debut: July 23, 2019 with “Movie Star”
• Origin: Seoul, South Korea
• Fandom: FIX
• Original lineup: BX, Seunghun, Yonghee, Bae Jinyoung and Hyunsuk
• Final lineup: BX, Seunghun, Yonghee and Hyunsuk
• Current status: Team activities stopped in April 2026 as the remaining C9 contracts ended

Formation and pre-debut history

C9 did not introduce CIX as five blank rookies who had never stood under a camera. BX had trained at YG Entertainment and appeared on MIXNINE; Seunghun had trained for years and also competed on that show. Bae Jinyoung arrived with the enormous visibility and pressure of Wanna One already attached to his name. Yonghee and Hyunsuk completed a team whose experience levels were different, but whose voices made sense together.

That difference mattered. “Movie Star” could have become Bae Jinyoung plus four anonymous men if C9 had built the debut around fame alone. The record did the smarter thing. BX’s low rap, Seunghun’s vocal force, Yonghee’s cleaner tone and Hyunsuk’s grounded presence gave the group more than one point of focus. Bae Jinyoung remained a major center, but CIX sounded like a group instead of a temporary backing unit.

The name Complete in X framed the members as unknown values that became whole together. Yes, the algebra metaphor got awkward once the lineup changed. That does not make it useless. It explains why their best records rely on contrast: polished surfaces against ugly feelings, softness against threat, individual voices against tightly controlled ensemble work.

Career and release history

The HELLO chapters gave CIX one of the cleaner opening runs of their generation. “Movie Star” established sleek R&B-pop without dressing rookie uncertainty as fake swagger. “Numb” confronted school pressure and emotional shutdown. “Jungle” turned temptation into a giant, overheated nightmare. The videos did not merely share dark lighting; they built a connected emotional world in which desire, punishment and rescue kept changing places.

Then “Cinema” walked in smiling. That change could have felt like an abrupt concept reset, but the group’s harmonies held it together. “Wave” extended the brighter palette, while “458” pulled desire back toward speed, danger and obsession. “Save Me, Kill Me” put emotional desperation inside a youth narrative that was easier to read than some of the earlier symbolism, yet it still sounded unmistakably like CIX.

The January 2024 single album 0 or 1 made a very CIX argument in two songs. “Lovers or Enemies” is bright, synthetic and impatient; “My name is shadow” is devoted enough to become unsettling. The wall.live performance linked below puts both in the same room. No giant set rescues the material. The voices, eye contact and arrangement have to carry the turn from playful demand to total surrender.

After Bae Jinyoung’s departure, the quartet returned with THUNDER FEVER in January 2025. The release included four-member recordings of the two 0 or 1 songs. Those versions belong in the archive as new recordings, not replacements for the five-member originals. Go Together and “Wonder You” followed in September 2025, closing the C9 chapter with a warmer full-length record instead of a catalogue that simply stopped mid-sentence.

Vocals, rap and performance

CIX rarely win by piling every sound into the chorus. Their arrangements leave lanes. Seunghun can push a peak without every other member shouting underneath him. BX’s rap works best as a tonal break, not a compulsory sixteen bars dropped into the middle of somebody else’s song. Yonghee’s cleaner delivery keeps dense material readable. Hyunsuk brings lower color and a physical scale that changes the choreography’s silhouette. In the original lineup, Bae Jinyoung sharpened the center and made controlled tension look natural.

The choreography often behaves like blocking in a thriller. Members close around one person, split into opposing lines or hold still long enough for a small gesture to register. That restraint is why “Jungle” feels dangerous and why “Cinema” feels buoyant. The group did not need a new performance identity for every concept. They changed the emotional temperature while keeping precision as the base language.

Their vocal blend deserves more credit than it received. CIX songs often move through close harmonies, breathier lines and sudden belts without turning the transition into a talent-show checkpoint. The members serve the song first. That sounds obvious until you listen to how many K-pop tracks stop dead so every assigned position can prove itself.

Fandom file: FIX

FIX is the official fan name. It completes the group-name idea: fans are the fixed value that helps Complete in X find its answer. The word also fits the archive better than anyone intended, because FIX spent years doing the work weak promotion should have done—explaining the story line, identifying performances, preserving translations and making sure the catalogue did not disappear between comeback cycles.

The end of regular team activity does not erase the fandom or convert every old credit into nostalgia. FIX still names the people who followed the group, and the Japanese fan-club closure notice is useful current evidence because it states plainly that the service ended following the halt of group activities. That is a status receipt, not a reason to flatten seven years into one sad sentence.

Current status: where CIX stands in 2026

On April 29, 2026, C9 Entertainment announced that CIX would stop team activities after months of discussion. BX and Seunghun’s contracts ended April 30. Yonghee enlisted on May 11 and his contract ended with that transition. Hyunsuk’s contract ended May 31. The official wording left emotional room for the name to return someday, but it did not announce a scheduled reunion, a transfer to another agency or an active four-member group.

So this page uses team activities stopped. “Disbanded” is the shorthand many headlines chose; “hiatus” is too vague because it implies an operating team waiting to resume. If the members reunite later, the page can record that later. A fan archive should not turn hope into a present-tense fact, and it should not pretend the name has been legally burned to the ground when the company itself left the door cracked.

Official links

• CIX official YouTube
• CIX official Instagram
• CIX official X account

Official music video tracker

This is the working video history for the group hub. A title appears here when its official upload has been identified; an in-depth RaeRae React gets its own card below when that exact upload has been reviewed.

• “Movie Star” — debut title track, 2019
• “Numb” — HELLO Chapter 2, 2019
• “Jungle” — HELLO Chapter 3, 2020
• “Cinema” — HELLO Chapter Ø, 2021
• “Wave” — OK Prologue: Be OK, 2021
• “458” — OK Episode 1: OK Not, 2022
• “Save Me, Kill Me” — OK Episode 2: I’m OK, 2023
• “Lovers or Enemies” — 0 or 1, 2024
• “My name is shadow” + “Lovers or Enemies” wall.live — exact reviewed upload n0RK5f1yZZE
• “THUNDER” — four-member title track, 2025
• “Wonder You” — final C9-era title track, 2025

Sources and receipts

Dates and status language were checked against the group’s own channels and reporting that reproduces C9 Entertainment’s notices. Where a source uses “disband” while C9 says team activities will stop, this page keeps the more precise official wording.

• CIX official video archive
• Bae Jinyoung’s 2024 departure and the four-member continuation
• C9’s April 2026 team-activity and contract notice
• Korea JoongAng Daily report quoting the agency statement
• FIX Japan service-closure notice following the halt of group activities

Why CIX never fit the easy fourth-generation boxes

CIX debuted in the same market that kept rewarding louder performance tracks, aggressive lore dumps and choruses designed to become ten-second challenges. They could do force. “Jungle” and “458” prove it. But force was never their only trick, and it was rarely the point. Their catalogue asked for patience: a second verse that changes the emotional stakes, a bridge that lets Seunghun open the ceiling, a low BX line that makes the polished track suddenly feel less safe.

That made the group easy to praise and strangely easy to overlook. Listeners who found “Movie Star” often loved it. The harder part was keeping casual listeners aware that another release had arrived. C9’s scheduling and promotion never built the dependable public rhythm the music deserved. FIX could circulate clips and explain the lore, but fans should not have to function as an unpaid distribution department every comeback.

The bright songs also complicate the lazy claim that CIX only owned one mood. “Cinema” is not dark CIX wearing a pastel jacket. The group relaxes its phrasing, lets warmth lead and makes affection feel communal. “Wave” has forward motion without the menace of “458.” “Wonder You” lands differently because it arrived after lineup change and near the end of the team’s run. Cheerful music does not become shallow simply because the singers know how to smile.

The lineup change without revisionist history

Bae Jinyoung’s exit attracted the predictable internet rewrite. Some people treated CIX as if one recognizable member had always carried four passengers. Others reacted by minimizing his role to prove the remaining quartet could continue. Both versions are nonsense. Bae Jinyoung was central to the group’s image and performance balance. BX, Seunghun, Yonghee and Hyunsuk were also audible, visible contributors with distinct jobs. A truthful archive can hold both facts without turning a contract ending into a fandom loyalty test.

The four-member recordings are especially useful evidence. They show how lines, harmonies and stage pictures changed after the departure. They do not expose the old versions as invalid, and they do not make the new versions lesser by definition. Listen to each as the lineup that recorded it. That simple rule prevents most of the credit mess that spreads when a group changes members.

Where to start listening

Start with “Movie Star” for the debut thesis, then play “Numb” and “Jungle” in order to hear the darker HELLO arc expand. Use “Cinema” as the test of whether you understand the group beyond black sets and temptation imagery. Follow it with “Wave,” then jump to “458” and “Save Me, Kill Me” for the later tension-heavy work.

After that, play both songs from 0 or 1 and watch the wall.live file. It strips away the excuse that production or editing created all the appeal. Move into THUNDER FEVER with the lineup change in mind, not as a blind comparison contest. End with Go Together. A final album should be heard as music before it becomes evidence in a contract timeline.

If you only have time for five songs, use “Movie Star,” “Jungle,” “Cinema,” “Save Me, Kill Me” and “Lovers or Enemies.” That set catches the group’s control, darkness, warmth, narrative instinct and synth-pop nerve. It also makes one thing obvious: CIX had more range than their public footprint ever suggested.

Member directory

• BX — founding member through the end of team activities.
• Seunghun — founding member through the end of team activities.
• Yonghee — founding member; enlisted May 11, 2026 after team activity ended.
• Bae Jinyoung — founding member who departed August 1, 2024.
• Hyunsuk — founding member through the end of team activities.