Mario

Mario, the father of Jeffy.

He is known for being the mascot of the Super Mario Games!

He gets annoyed by Jeffy when he smacks his diaper

In the SMBC Movie "mario and jeffy switch bodies"

Mario and Jeffy switched bodies (obviously)

Then Jeffy in Mario's body said some rude stuff to

Yoshi, then they turned back to normal.

Later on in the plush series

Mario met a hunter named Woody

and tried to find Jeffy when he went missing.

Then in some SMBC Movie,

Chef Pee Pee and Mario became best friends.