Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big Bang Theory.
Sonic, Tails & Knuckles were about to fight a New Threat that would destroy everything. Dr. Robotnik returns once again to get revenge on Sonic and the Others along with his new Allies, Shadow the Hedgehog & Rouge the Bat
