Jeffy

Jeffy, the son of Mario.

He used to get bullied by Luigi in the SMBC movie "jeffy gets bullied 2"

He got bad grades in "Jeffy's report card!"

And he has always hated green beans for some reason.

He also has a blue helmet on his head.

In the SMBC Movie "Jeffy's Missing"

He got kidnapped by Bowser (Junior's dad)

Bowser was in jail during that time, but he found a way to escape.

Jeffy also doesn't like Chef Pee Pee's cooking that much.

Later on in the plush series:

Jeffy is the same like his old self and he still hates green beans to this day.