Round 1
Round 2Colosseum Stages · Otherworld Colosseum · 1/5
Energy200
Clear XP3,800
Base HP1,000,000
Map length5,000
Max enemies30
Spawn interval0.03s
Enemy traits 
Alien 
Traitless
Alien Traitless Crown difficulty
All enemies ×100% magnification
No restrictions
All enemies ×120% magnification
No restrictions
Boss
Spawn timeline
Scroll sideways to see more. For enemies with a base HP condition, drag the orange circle to set when they appear.
Enemies 8 types
| Enemy | Count | Mag. | HP | Attack | First | Respawn |
|---|---|---|---|---|---|---|
| From the start 3 types | ||||||
 UltraBaaBaa | 1 | 1200% | 6,000 | 12,000 | 8s | — |
 Otta-smack-u | 1 | 800% | 240,000 | 11,976 | 16.67s | — |
 Squire Rel | 8 | 4000% | 3,200 | 1,200 | 10s | 3.33–6.67s |
| Once base HP ≤ 99% 8 types | ||||||
| Squire Rel | Unlimited | 4000% | 3,200 | 1,200 | after 3.33s | 6.67–13.33s |
 General GreGory | 3 | 2500% | 375,000 | 14,175 | Immediately | 26.67–33.33s |
| Otta-smack-u | 2 | 800% | 240,000 | 11,976 | after 3.33s | 13.33–20s |
| UltraBaaBaa | Unlimited | 1200% | 6,000 | 12,000 | after 6.67s | 26.67–33.33s |
 Rain D. | 2 | 500% | 450,000 | 22,735 | after 13.33s | 46.67–53.33s |
 Commander Ostromeda | 1 | 150% | 1,050,000 | 21,000 | after 40s | — |
| General GreGory | 5 | 2500% | 375,000 | 14,175 | after 70s | 20–26.67s |
 LeMurr | 3 | 2400% | 480,000 | 19,200 | after 80s | 26.67–33.33s |
 R.Ost | 1 | 300% | 1,020,000 | 21,600 | after 66.67s | — |
| Rain D. | 3 | 500% | 450,000 | 22,735 | after 93.33s | 26.67–33.33s |
| Commander Ostromeda | 1 | 150% | 1,050,000 | 21,000 | after 93.33s | — |
| R.Ost Boss | 1 | 300% | 1,020,000 | 21,600 | Immediately | — |
HP and attack include the magnification.