3-IN FILIBUSTER INVASION
Ch.3 bonus boss with 2M HP, 1M-damage Long Distance (300~4300) attack, and 5 immunities (Waves/KB/Freeze/Slow/Weaken). 40-second foreswing is his weakness — interrupt with rapid 10k+ hits across his 200 knockbacks. Beating his stage unlocks Filibuster Cat X.
Teacher Bun Bun's Alien/Floating variant — 750,000 HP, 8,888 AP area attack at 200 range, 100% Wave Attack. Boss of Deneb Ch.2 and appears in the Filibuster bonus stage. Wave-Immune meatshields + Anti-Alien/Anti-Floating Ubers (Holy Valkyrie, Wonder Mommy).
High HP, slow attack — stall and chip with anti-Red.
Fast and tanky for a peon — knocks back meatshields.
Dolphina variant — 40,000 HP and 15,000 Barrier, but only 50 damage. Speed 50 makes him a fast meat wall. Once the Barrier breaks his low DPS makes him a useful stepping stone for Crimson Mina / Polevaulter Cat / Jellycat.
Beefy Gory variant with Area Attack and a 6,000-damage Barrier. Once the Barrier breaks he's vulnerable to crowd control (Seafarer Cat, Surge units).
Ch.3 bonus stage that overrides a random Ch.3 stage upon clearing the chapter. Filibuster Obstructa (2M HP, 1M damage, Long Distance 300~4300) WILL one-shot the Cat Base from any position — your only hope is interrupting his 40-second foreswing with rapid 10k+ hits across his 200 knockbacks. Cat Cannon and Wave Attacks are blocked, so timing is everything. Win unlocks Filibuster Cat X.
The most-quoted 'bait' stage in the entire game. Filibuster Obstructa one-shots your Cat Base from any range (Long Distance 300~4300). No-continues restriction means you get one shot per attempt. Community consensus: this isn't a stage you clear — it's a stage you outpace. Rapid 10k+ hits during his 40-second foreswing window are the only path; Cat Cannon and Wave Attacks are both blocked. Required lineup always includes Manic Lion / Manic Eraser for fast meatshield spam, multiple Bahamut variants (Crazed + Awakened + base Bahamut Cat) for stacked burst chip, and the entire Uber roster for backline DPS — Ganglion, Bombercat, Twinstars, whatever you have. Common failure: assuming his one-shot is preventable. It isn't. You're racing his foreswing. Win unlocks Filibuster Cat X, which many players consider the best 'reward' Special Cat in the game.
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 GreGory 6k + Kid Tappa 15k 
AWAKENED BAHAMUT CAT S Speed 60 rusher — closes blind-spot snipers (Bore) before the chain