Sonic first discovered his Knight Sonic form while playing a game of Super Mario Bros. When he beat the game for the 42nd time, Mario jumped out of the screen and started shooting fireballs at him. Sonic grabbed the Chaos Emeralds, but Mario hit them with a fireball. The power of the fireball charged them together into the legendary Chaos Helmet. After putting on the helmet, Sonic became Knight Sonic, and Mario regretted ever messing with Sonic. Sonic chased Mario around for three hours, just for the fun of it. Then, he let Mario go. Mario just hid in the toilet, worried Sonic gave him rabies.