Jeffy is one of the main characters from the YouTube Plush Series, SuperMarioLogan. He is a 17 year old who is the adopted son of Mario and Rosalina. Jeffy is described as being stupid and dumb at times and loves putting pencils on his nose.

How tall is Jeffy?

The puppet is 22 inches tall from top to toe. The inside of the puppet is large enough to fit a childs hand and a small adult.

What grade is Jeffy?

It was confirmed to be over in Jeffy's Scary Movie! when mentioning Jeffy passed fourth grade. The series is also like the previous two school series as it also shows the students' daily lives before and after the school day begins.