Subject 8 is a Secret-tier unit added to Anime Expeditions with the Monster Clash update (3.5) on October 6, 2026. You earn it from the Monster Rift inside the Monster Clash Battle Event, then spend Sprites and Gold to turn it into its stronger Monster form. Its design is based on Kafka Hibino’s Kaiju form from Kaiju No. 8, while its Shiny model draws from Godzilla.
Quick answer: Clear a Monster Clash stage, wait for the 4% helicopter to land, ride it into the Monster Rift, and clear the Rift. Subject 8 drops at 100% on Rift clear.
How the Monster Rift drop works
Subject 8 does not drop from the normal Monster Clash stage. It only comes from the Monster Rift, a special stage that you reach through a helicopter that can appear after a clear. The helicopter is not guaranteed, so a full run can take several attempts.
- Clearing a Monster Clash stage gives the helicopter a 4% base chance to fly onto the map.
- Each Merged Monster you kill adds +0.2% to that chance, up to a maximum of +3%.
- The helicopter spawn pity is 25, so the chance is guaranteed by the 25th qualifying clear.
- Clearing the Monster Rift drops Subject 8 at 100%.
The stage does not auto-restart when the helicopter appears, so you can take your time before interacting with it. Only the host can start the trip into the Rift.
Steps to get Subject 8
Evolve Subject 8 into its Monster form
After obtaining Subject 8, go to the Evolution area and pay the full amount to unlock Subject 8 (Monster). This evolution provides an extra attack and passive ability, as well as additional upgrade levels.
| Material | Amount |
|---|---|
| Sprite (Green) | 25 |
| Sprite (Blue) | 25 |
| Sprite (Pink) | 25 |
| Sprite (Rainbow) | 3 |
| Gold | 10,000 |
The evolution confirms when Subject 8 (Monster) appears in your unit list with its upgraded attacks, Colossus Kick and Monster Breath, available in-match.
Subject 8 (Monster) stats and typing
| Attribute | Value |
|---|---|
| Rarity | Secret |
| Archetype | Physical |
| Element | Storm |
| DMG | 1406 |
| SPA | 8.73 |
| RNG | 10 |
| Placement Limit | 3 |
It deals Physical, Storm-element damage and can be placed up to three times. Its matching equipment, Monster Claws, strengthens the Unbound window with more damage, lower SPA, bigger AoE, and extra output from Colossal Roar.
Control Meter and Unbound passives
The Losing Control passive gives Subject 8 a Control Meter that starts at 0 and caps at 100. Every attack adds +15 and every takedown adds +1, so the meter fills faster the more it fights.
- 25 stacks: attacks deal an extra instance of 30% of current damage.
- 50 stacks: +30% AoE size and immunity to all status debuffs.
- 75 stacks: -15% SPA and +20% range.
- 100 stacks: unlocks Unbound.
Unbound runs for 20 seconds at a full meter, giving +50% damage, -15% SPA, and +20% AoE size. Enemies hit by Colossal Roar take 100% of current damage spread over five hits and grant all units in range a 20% Physical damage boost. When the timer ends, the Control Meter resets to 0 and starts building again.
Because the meter only climbs through combat, Subject 8 wants to be placed where it attacks constantly, such as the center of a Monster Clash map where both lanes feed into its range. That keeps the higher Control Meter tiers active and shortens the wait between Unbound windows.
