Ceffy

Ceffy is a kid who showed up at Mario's door in Mario The Babysitter! and ruined Mario's life.

RelationShips

Luigi feels bad for Ceffy and was mad at mario in Ceffy's chicken nuggets!

Mario hates Ceffy and in Ceffy's Chicken Nuggets Mario hated Ceffy even more

Peach cares for Ceffy like a son and helped tuck him in as in Mario's New Girlfriend!

Zomiben found Ceffy strange and didn't think anything about him instead about a kid being inside mario's body

Trivia
 * Ceffy is based off Jeffy from SML
 * Ceffy is a Caillou plush with Ceffy written on the shirt
 * Ceffy is holded like a puppet