Changed his entire personality every couple of years, which is either genius or deeply unsettling.
Fun fact: His mismatched eyes were caused by a permanently dilated left pupil from a teenage fistfight.
Sony needed a mascot so they went with a mutant bandicoot in jorts, and fair play it worked.
Fun fact: Naughty Dog internally codenamed the project "Sonic's Ass Game" because the camera always showed Crash from behind.