2-10 TRITON
2-10 Triton is the 10th stage of Cosmos Ch.2 — The Passion of Catgod. Previous stage: 2-9 Neptune. Next stage: 2-11 Pluto.
Kid Tappa carries a Barrier (up to 15,000 HP) — your hits are absorbed until it's broken.
LI'L GROSS CAT B 30% Barrier Breaker. Also fits “Counter Alien.” 
SPACE CAT A 50% Barrier Breaker. Also fits “Out-range Kid Tappa.” 
FENCER CAT A Guaranteed 100% Barrier Breaker at long range — the reliable accessible breaker. Also fits “Out-range Kid Tappa.” 
MIZLI S 100% chance to break Alien Barriers. Also fits “Counter Alien.” 
LUMINA S 100% Barrier Breaker opens Star Alien Barriers for the team. Also fits “Counter Alien.” 
SKIRT CAT B 30% Barrier Breaker. Also fits “Out-range Kid Tappa.” Kid Tappa is Alien. Anti-Alien units take less damage and deal more.
GROSS CAT A Its True Form is Strong Against Alien, giving budget anti-Alien value. Also fits “Out-range Kid Tappa.” LI'L GROSS CAT B True Form has a 30% Knockback vs Alien. Also fits “Break the Barrier.” 
BAKERY CAT A Curses Alien enemies. Also fits “Out-range Kid Tappa.” 
LITTLE LEAGUER CAT S Resistant vs Alien and Long Distance — a budget anti-Alien backliner. Also fits “Break the Barrier.” MIZLI S KB, Slow, Resistant and Barrier break all vs Alien. Also fits “Break the Barrier.” Kid Tappa reaches 100 range. Units that out-range it can chip safely without taking hits.
GROSS CAT A Range 350 — fires from beyond its 100. Also fits “Counter Alien.” LI'L GROSS CAT B Range 300 — fires from beyond its 100. Also fits “Break the Barrier.” 
PSYCHOCAT A Range 365 — fires from beyond its 100. Also fits “Counter Alien.” 
CAT TOASTER A Range 330 — fires from beyond its 100. Also fits “Break the Barrier.” MIZLI S Range 450 — fires from beyond its 100. Also fits “Break the Barrier.” Kid Tappa debuts as boss — 40,000 HP with a 15,000-HP Barrier but only ~50 damage per hit. Once the Barrier breaks, Kid Tappa becomes a free "stepping stone" you can stack Long-Distance damage behind — his attacks are too weak to push your line. Bazifenix breaks the Barrier; then Major Leaguer Cat and Crimson Mina print damage from outside Tappa's range.
Kid Tappa is the new boss — 40k HP + 15k Barrier, 50 damage. r/battlecats's framing: 'the Kid Tappa stepping-stone' — once his Barrier breaks, his ~50 damage makes him the safest place to charge meter for Crimson Mina, Polevaulter Cat, or Jellycat. Hyppoh + Shibalien Elite + Elizabeth the LVIth round out a manageable peon wave. Lineup: any Anti-Alien Barrier Breaker (Crazed Bahamut, Bazibon) → Mohawk frontline → optional meter-charging Ubers (Crimson Mina especially benefits) → Awakened Bahamut for finishing. Common failure: skipping the Wave-Immune frontline for Elizabeth — her wave hits multiple ranks at once and crashes lineups that haven't planned for it.
The castle you destroy to clear the stage.