From the Super Mario Wiki, the Mario encyclopedia
Not to be confused with Sumbi.
Sunbi being attacked by Skellobits

Sunbi is a Nimbi from Super Paper Mario. His name is derived from Sunday[citation needed], just like many other Nimbis that have month and season derived names. He gives the heroes a Door Key after the player defeats two Skellobits that ambushed him.

Tattle information[edit]

That's Sunbi... He's a very serious Nimbi... He volunteers as a palace guard in The Overthere... Though not physically strong, he has a strong sense of justice...