Tiara is a supporting character in Super Mario Odyssey. She is a Bonneter, and lives with her bigger brother Cappy in the Cap Kingdom. She was kidnapped by Bowser to be used as Princess Peach's headdress for their wedding in Super Mario Odyssey. This prompts her brother to team up with Mario to rescue both damsels.

After Bowser is defeated and they return to the Mushroom Kingdom, Tiara begins exploring the world with Princess Peach. They’ve become close friends ever since.

Voice Reference: Anime Voice Comparison- Anya Forger (Spy x Family)