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King Boo
from Mario (Series)
"hair between eyes""purple eyes""red eyes""white hair""long hair""very long hair"
Want to collect, style and chat with King Boo?
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Play Waifumaster free
King Boo is a character from Mario (Series). king boo, mario (series) Collect King Boo as a gacha card on Waifumaster, chat with King Boo as her own AI persona, and trade duplicate cards on the player-to-player marketplace — free to play.
Chat with King Boo
King Boo has her own AI chat persona — she replies in character, remembers what you tell her, and adapts to the tone you set. Sign in to start a private, one-on-one chat with King Boo.
💬 Chat with King Boo →How to collect King Boo
Rarity · Rare (R)
- Pull her from the character gacha — soft pity kicks in at 50 pulls and a top-tier card is guaranteed by 60, so unlucky streaks still pay off.
- Raise her mastery by pulling duplicates (N → R → SR → SSR → UR). Each tier unlocks a new outfit, pose set, and expanded chat memory for King Boo.
- Skip the grind — buy King Boo straight from the player marketplace or the curated Trader shop with 🌸 hearts.
- Style & chat — once you own King Boo you can restyle her outfits and talk to her one-on-one as her own AI persona.