Jeffy

"Hmph, Jeffy, never seen him before, I guess he's a puppet off of SuperMarioLogan, but his hatred for Green Beans makes it worse, whenever he's ready to fight the villainous army or whatever, Just call him".

--Su Ji-Hoon, Master of the Puppets

Jeffy Jeffy Pierre François is one of main characters of the SML series who is the adoptive son of Mario and Rosalina.

He is the oldest child of Nancy and Jacques Pierre François, and the older brother of Feebee and Scooter, but since his biological father Jacques faked his death and he killed Nancy by shooting her in the head in "Jeffy's 18th Birthday!", he is now the adoptive child of Mario and his wife, Rosalina. Despite this, he still has his younger cloned brother, Scooter, who is currently wandering around outside Mario's house somewhere.

in When the Cold Breeze Blows Away, Jeffy is pulled out of the SML universe and enlisted to protect and serve the Preschool Girls whenever there's a Rage Virus or something that's going on, he also is a part of Team SML, he is the bravest member in World War III.

Jeffy is portayed by Lance Thirtyacre.