3-45 N77 NEBULA
×2 
∞ 
∞ 
×3 
×5 
×3 ×3 Spawns in groups of three. Area attackers clear them fast.
Tiny but spawns constantly — distraction unit.
Massive 266,000-damage Barrier (one of the largest in the game) protects very low HP. Anti-Alien Barrier Breakers (Bazibon line, Loincloth Cat) cut through cleanly.
Only takes 1 damage per hit. Critical-hit cats only.
Tankier Metal — same critical-only rule.
Master A. variant — 451 range area attacker with 20% Warp chance back 500 range. Outrange with backliners or rush past with Awakened Bahamut / Maglev Cat.
Croakley variant — Long Distance (400~550) backliner with 65,000 Barrier and a guaranteed 100% Warp back 250 range. Only 700 HP — once the Barrier breaks, waves or Major Leaguer Cat finish the job.
100% Warp chance back 500 range for 3.3s — extremely disruptive. Low range vulnerability. Counter with Area Attackers and Warp-Immune cats (Bora/Lumina line, Rover Cat Mk II).
Ribbo's 65k Barrier + 100% Warp at 400~550 range. Snipe with waves (Major Leaguer Cat).
Ribbo + UltraBaaBaa + Project A + Star Peng — considered by some players the worst stage in CotC, full stop. The ROW1 restriction means you can't backline. All four bosses are at endgame magnifications. Community fix: guaranteed Barrier Breaker (Ganglion) for both UltraBaaBaa and Ribbo, Warp Immune meatshields (Manic Mohawk), A. Bahamut for Project A, and an Anti-Alien LR (Lumina) as the tank. Some players consider this harder than 3-47 Black Hole. Common failure: not bringing both Barrier Breakers AND Warp Immune. Single-solution lineups die.
BAZIFENIX S Anti-Alien Uber primary — 100% Barrier Breaker + 100% Weaken vs Alien handles every Alien threat on the stage 
LUMINALIA S Anti-Alien LR tank — ~1.9M effective HP vs Alien + Warp Immunity, stalls anything the stage spawns 
LOINCLOTH CAT B 30% Barrier Breaker — Special-tier crack for UltraBaaBaa 266k + Ribbo 65k 
AWAKENED BAHAMUT CAT S Speed 60 rusher — closes blind-spot snipers (Ribbo) before the chain