Sonic The Hedgehog (SMG4)

"You're too slow!"

- Sonic

"Hey, Hey, Hey! It’s Sonic, Sonic the Hedgehog!"

- Sonic the Hedgehog

Sonic is a blue hedgehog who is anthropomorphic and is gifted with super speed from birth, coming from Mobius which is an alternate dimension from the Mushroom Kingdom that it native to its capital South Island. He is the main character of SEGA's victorious Sonic the Hedgehog franchise. In the Sonic the Derphog sub-series is the main protagonist and appears in some other SuperMarioGlitchy4 videos. However he seems to appear in videos less than before.

The wacky Wario Bros. :The Winning Ticket.
This is the first appearance were he tells the viewers that he is Sonic, Sonic the Hedgehog, but then Wario's car ran him over. He then shows up where the (Wacky) Wario Bros wait for the bus, along with Kirby. Then saw Wario and realizes he was the one that ran him over with the car. Then he battles Wario and uses Chaos Control to slow down Wario, then Wario threw Kirby and Waluigi and into Sonic, but just misses, but then was run over by a train, and killed him. He was unseen for the rest of the video.

Super Mario 64 Bloopers: Who let the Chomp out?

Sonic mildly appeared in this episode by making a short cameo. He Chain Chomp greeted each other at the door to the castle and Sonic introduced himself. He then later on they became friends.

DerpTV: Super Happy Fun Fun Gameshow
He slightly showed again by making a cameo. He was in the backstage and meets Mario, who throws him to Chain Chomp and later rewards Mario with a free holiday to Teletubby Land.

R64: Mario the Olympian
As Sonic made it to the Olympic Games, he picks up Mario on the side of the road, Mario crashes his recreational vehicle leaving him knocked out, Mario then uses Sonic's passed-out body to gain entry to the property to the Olympic Stadium. Later Mario cheats at racing event by using his super-speed.

Mario VS Sonic: PRANK BATTLE
Sonic shows up as a main character. He's in line at Waluigi's Taco Stand witness Wario pulling a practical joke on Waluigi by putting poison on a taco he gave to Big Smoke, who attacked him. Sonic believes he could pull off a better trick by going through this. Mario fails to agree with this and he believes that he could've done a better job because he has a "Medal for No.1 Pranker". Then Sonic then challenges Mario to a Prank War, on who could do better tricks towards people, in the end they savagely prank each other until they can no longer take it. They deciding to stop, and go off to eat tacos, after multiple tricks which get them wounded and hurt more often than not.

SMG4: If Mario was in The Sonic Movie
The government tries to arrest Sonic and have Swagmaster69696969696 and Chris Gordman to chase after him, after Sonic caused a major black out. He fell upon Mario who is now caught in the turmoil, and both of them hide in a Blockbuster, where Chris and Swagmaster are questioning Dr. Eggman for assistance. Now that Dr. Eggman and the military and are after Sonic, Mario encourages disguising Sonic as a girl and agrees to go on a date with Swagmaster. That caused Swagmaster to mistake Sonic for an actual girl and right away crushes on him. In no way did Sonic felt same way. Once Dr. Eggman later unveils Sonic's true identity, Swagmaster announces that it's on the inside that counts, and the military had now dropped Sonic from their view. Swagmaster took Sonic on a honeymoon, as Sonic was happy for no longer being hunted down by the government.

SMG4: Wario Tries To Stop Himself From Dying
He shows up as a cameo in the Mushroom Kingdom National Bank when Mr. Hall Monitor realized Wario speeding up towards him.

SMG4: The Totally Legit Learning Show With SMG4
Swagmaster6969696969 declared that Sonic is still his waifu. So that means Sonic was mentioned.

Trivia

 * Almost all the time Sonic acts calm, is intelligent, and uses good common sense, unlike Mario, who mostly acts like a retard, has anger problems, is insane, and uses violence in order to to solve problems that he has. So this quite makes sense to see as Mario and Sonic were rivals in the real-life "console wars".