Sonic Jr. (just called Jr.) is Sonic and Amy's 10-year-old son. Like his father, Jr defends Mobius from villains like Dr. Robotnik Eggman. His personality also is like his dad's. Plus he can run just as fast as him too. As a baby he always liked to play with his mother's police hat and handcuffs and sometimes even cuffed his own parents with them. Jr however has outgrown that.
His first appearance is "Amy and Sonic's Life Together".
- Skarloey or Jack (Thomas the Tank Engine and Friends)
- Theodore (TUGS)
- Baby Mario (Super Mario Bros.)
- Yakko Warner (Tiny Toon Adventures)
- Little Cat A (Dr. Seuss/The Wubbulous World of Dr. Seuss)
- Christopher Robin (Andre Ighodalo's Day)
- Kowalski or Skipper (Madagascar)
- Perfect Peter (Horrid Henry)
- Bulbasaur (Pokemon)
- Graviturtle (Teenage Mutant Ninja Turtles)
- Shoutmon (Digimon)