Sonic the Hedgehog

Sonic is a blue hedgehog and an evil parody of the Sega mascot with the same name. He is one of the main rivals of Mario and the main antagonist of the Mario and Bowser's Stupid and Crazy Adventure series. A running gag of the episodes he appeared in is that people have mistaken Sonic for a cat, much to his irritation. His final irritation played a role in his downfall. He died in Mario and Bowser's Stupid and Crazy Adventures Episode 6 and in Episode 7 in the flashback Despite his death in episode 7, it is said that he'll still appear in videos

Episode Summaries
In Mario's Wig, he is seen with Peach, as her boyfriend. As Peach and Mario are talking on the phone, Sonic interjected and asked Mario how he's doing. Mario responded by exclaiming at Sonic to get away from her and that she is his. Sonic then said to Mario that Peach is dating him and hangs up on him. At the end of the episode, Sonic is seen wearing Mario's wig and goes to kiss Peach.

In Mario and Bowser's Stupid and Crazy Adventures Episode 3, Mario and Bowser discusses about Sonic (because of a potential role in the kidnapping of Peach) and he arrives in the room. Bowser asks if Sonic is a cat, to which Sonic replied that he is a hedgehog in an irritated tone. Mario says to Sonic that he has been looking for him and then he talks about his good looks and his home country, England. Mario asked Sonic what he did with Peach, and Sonic said he dumped her because of her "getting a little too clingy". Mario suggests to Sonic that he kidnapped her and Sonic remarked that no one would want to kidnap her. Sonicalso tells Mario that Peach lied about being pregnant with Sonic's baby (instead she was pregnant with someone else's baby). Mario asked if Sonic had a clue that would lead to finding Peach, but he refused to give the clue because they are enemies. Bowser came up behind him a moment later and stuffed him in a bag. Then, Mario and Bowser continuously stepped on him until he did not move anymore. Sonic woke up trapped to a sink and Bowser planned to torture him to get the clue, much to Bowser's amusement. Bowser grabbed a cup of tea and .demanded that Sonic tell him the clue or he would pour it down the drain. Sonic. was scared about Bowser pouring down the tea, but said he did not know anything. Bowser denied this and poured down most of the tea. But, Sonic still said he didn't know, which caused Bowser to poor down the rest (much to Sonic's dismay). Bowser laughed at his misery and mocked him. Then, Mario said to Bowser that this was harsh. Bowser told Mario to get a picture of the Queen of England. Then, Mario approached Sonic with the picture. Mario asked him for the clue or he would destroy it. Sonic said he promised he didn't know, then Mario crumpled up the picture. Sonic replied in terror and grieved over the picture. Mario and Bowser told Sonic to "break". Sonic still said he didn't know, which provoked Mario to get the toothbrush.In Ep.6 he decides to kill Peach but Peach has her baby sonic runs with her baby and then punches the hell out of Mario for 4 minutes. Then,Bowser gets Black Yoshi to kill Sonic Black yoshi takes his glock and lets Sonic say his last words and he evantully kills sonic.

Mario was annoyed by his death because he was the only one who knew where the baby was, but considering he and Bowser found the baby in the end. It's sage to say Mario no longer cares