Not to be confused with JEFFJEFFJEFFJEFF

Jeffy is a person from the SuperMarioLogan universe.


Hey wanna see my pencil?

Life of Jeffy

Jeffy has an odd but interesting life. His adoptive father is Super Mario and his adoptive mother is Rosalina. Jeffy has a fondness for pencils, cat pianos and marshmallows. He has a sister named Fee-Bee but it turns out Fee-Bee was only a dream. Jeffy has played boom boom balloon and lost because he popped the balloon. When you scream at Jeffy, Jeffy will scream back.


  • "Why?"
  • "Wanna see my pencil?"
  • "Do you have goldfish?"
  • "Where's my hop hop song?"
  • "What doing?"
  • "U! U! U!"