After Floor 310, all Bosses recycle starting with Kali the Small One. The sole exception is Floor 400, where Opal the Tactician replaces the Monster Head from Floor 90.
Magic Amplifier Ruarke gets skipped for Floor 410, rather than replaced. This means the Floor 410 Boss is Chimera Maid Larnie.
----------------------------------------------------------------------------------[]
Floor 5: Kali the Small One
Floor 10: Invincible Veleda
Floor 15: Regretful Captain Eirny
Floor 20: Evil Eye Medusa
Floor 25: Mesmer Prova
Floor 30: Succubus Ginny
Floor 35: Agrona the Unhinged {+ Morisa the Scallywag + Fern the Exuberant + Shore Driven Lael}
Floor 40: Wet Hair Claire
Floor 45: Spirit Master Valum
Floor 50: Healer Eris
Floor 55: Chaotic Lyrit
Floor 60: Sniper Cecil
Floor 65: Alexa the Cunning
Floor 70: Noble Inanna
Floor 75: Fair-haired Ellete
Floor 80: Spy Lynn
Floor 85: Mad Scientist Sintra
Floor 90: Monster Head [no persuade]
Floor 95: Mech Soldier Wildarm
Floor 100: Magic Amplifier Ruarke
Floor 105: Chimera Maid Larnie
Floor 110: Sea Dragon Belle
Floor 115: Fire Demon Edana
Floor 120: Razor Belanna
Floor 125: Fusion Gunner Emily
Floor 130: Red Maid Rory
Floor 135: Sabelle the Slayer
Floor 140: Chimera Ronat
Floor 145: Madame Patricia
Floor 150: Antique Gun Mirta
Floor 155: Assassin Chelsea
Floor 160: Banshee Wraith
Floor 165: Quick Draw Kid
Floor 170: High Witch Audrey
Floor 175: Sergeant Ellan
Floor 180: Morisa the Scallywag
Floor 185: December the Cold
Floor 190: Nothura the Thunder Blade
Floor 195: Rohana the Death Song
Floor 200: Nekana the Ravager
Floor 205: Bellona the Timid
Floor 210: Bysen the Avenger
Floor 215: Middin the Miserable
Floor 220: Black Bonny Sisay
Floor 225: April the Sunny
Floor 230: Death Fist Selma
Floor 235: Iron Blood Cherron
Floor 240: Gunner-Mage Fleur
Floor 245: Cyclops Hornet
Floor 250: Tomboy Mary Read
Floor 255: Dancer Catalina
Floor 260: Mercenary Commander Ilta
Floor 265: Chain Mistress Abia
Floor 270: Pastora the Black Rose
Floor 275: Night Crawler Sawyer
Floor 280: Pistol Whip Idola
Floor 285: Enchanted Cinta
Floor 290: Maven the Beastmistress
Floor 295: Unyielding Lyrit
Floor 300: Afton the Two-Faced
Floor 305: Mech Mermaid
Floor 310: Golden Gun Amanda
Floor 400: Opal the Tactician