3-15 EGG NEBULA
3-15 Egg Nebula is the 15th stage of Cosmos Ch.3 — Even Stars Burn Out. Previous stage: 3-14 Catseye Nebula. Next stage: 3-16 Calabash Nebula.
UltraBaaBaa's 266,000-HP Barrier is the highest in the game. Anti-Alien Barrier Breakers (Bazibon line, Loincloth Cat) cut through.
UltraBaaBaa carries a Barrier (up to 266,000 HP) — your hits are absorbed until it's broken.
UltraBaaBaa's 266,000 Barrier needs a guaranteed 100% Barrier Breaker — chance-based units stall and waste your damage window.
SUPERCAR CAT B Guaranteed 100% Barrier Breaker. 
FENCER CAT A Guaranteed 100% Barrier Breaker at long range — the reliable accessible breaker. 
BORA S 100% Barrier Breaker reliably cracks Star Alien Barriers. Also fits “Counter Alien.” 
LUMINA S 100% Barrier Breaker opens Star Alien Barriers for the team. Also fits “Counter Alien.” 
GRAVI S 100% chance to break Barriers. Also fits “Counter Alien.” 
KOMORI S 100% chance to break Barriers. Also fits “Counter Alien.” 
Ursamajor, UltraBaaBaa, Shibalien Elite and Star Peng are 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. 
LI'L GROSS CAT B True Form has a 30% Knockback vs Alien. Also fits “Break the Barrier.” 
BAKERY CAT A Curses Alien enemies. 
MITER SAW CAT A Resistant to Alien and deals Massive Damage to Alien. Also fits “Break the Barrier.” 
MIZLI S KB, Slow, Resistant and Barrier break all vs Alien. Also fits “Break the Barrier.” WIKI PICK = listed on the stage's Battle Cats Wiki page; COMMUNITY = found by title, channel and date. Neither is verified by Claws' Den. Nothing loads from YouTube until you press play. Find more on YouTube ↗
The castle you destroy to clear the stage.