Sonic the Hedgehog, or Sonic, is a blue anthropomorphic hedgehog gifted with super speed from birth, hailing from Mobius, an alternate dimension from the Mushroom Kingdom, native to it's capital South Island. He is the main protagonist of SEGA's long-successful Sonic the Hedgehog franchise. Sonic has appeared in some of SuperMarioGlitchy4's Mario videos, and is the main protagonist in the Sonic the Derphog sub-series.
He made an appearance telling the viewers that he is Sonic, Sonic the Hedgehog, but then was ran over by Wario's car. He then appears where the (Wacky) Wario Bros wait for the bus, along with Kirby. He then sees Wario and notices that he was the one that ran over him. He then battles Wario, he uses Chaos Control to slow down Wario, Wario then throws Waluigi and Kirby into Sonic, but misses, but then got ran over by a train, ultimately killing him, he wasn't seen for the rest of the video.
Sonic made a small cameo appearance. He greets the Chain Chomp at the door to the castle and introduces himself. He then later becomes friends with Chain Chomp.
Sonic made a small cameo appearance again. He was in the backstage and encounters Mario, who throws him to the Chain Chomp, who later rewards Mario a free holiday to Teletubby Land, much to the fury of a plumber, who throws tantrums.
Sonic picks up Mario on the side of the road, As Sonic made his way to the Olympic Games, Mario crashes his RV leaving him unconscious, then Mario uses Sonic passed out body to gain access to the premises to the Olympic Stadium, Mario later use his super speed to cheat a racing event.
Sonic appears as a main character. He is in line at Waluigi's Taco Stand witness Wario pulling a prank on Waluigi by poisoning a taco he gave to Big Smoke, who attacked him. Witnessing this, Sonic believes he could pull off a better prank, Mario disagrees this and believes he could've done better because he has a "Medal for No.1 Pranker". Sonic then challenges Mario to a Prank War, on who could do better pranks on people, eventually they viciously prank each other until they can't take it anymore. After numerous pranks which (more often than not) get them injured and hurt, They deciding to stop, and go off to eat tacos.
After Sonic caused a massive power outage. The government attends to apprehend Sonic and have Swagmaster69696969696 and Chris Gordman to chase after him. He came across Mario who is now caught in the turmoil, and both hide in a Blockbuster, where Chris and Swagmaster are asking Dr. Eggman for assistance. Now that both the military and Eggman are after him, Mario suggests disguising Sonic as a girl and agrees to go on a date with Swagmaster, which he mistakes Sonic for an actual girl and immediately falls in love with him. Sonic does not feel the same way. Once Dr. Eggman later reveals Sonic's true identity, Swagmaster proclaims that it's on the inside that counts and military had now dropped Sonic from their sight. Just as Sonic was grateful for no longer being hunted down by the government, Swagmaster later took Sonic on a honeymoon.