He is usually the deuteragonist in videos, being Mario's sidekick. His personality wildly varies between appearances, but he is mostly a fruit lover, a coward sometimes and usually a nice guy. He also refuses to pay his taxes, going as far as letting his child die in War of The Fat Italians 2018 and he is shown to be very suicidal shown in a few videos.
Yoshi is an anthropomorphic dinosaur who is a drug addict. He is an ally of Mario, Luigi, and Peach. The reason that he lives on the roof of the castle is because he ate all the food that Peach had. Yoshi, wanting to return to the castle in the video Yoshrooms, tried to break into the castle., and past the events of videos Yoshrooms Yoshi was part of the cast with Mario, SMG4, Meggy, Luigi, Bowser, and among others. His exclusion is seen in the video of Stupid Mario World where Yoshi asks Mario why he does not visit him and Mario tells him that it is because he does not see him when he walks out of the castle and becoming only cameos in recent videos.
Yoshi first appeared in SMG4's second blooper, Dreams, where Yoshi feeds Mario some mushrooms he found growing on the side of the toilet, making Mario high.
Yoshi appears again in this blooper where he tells Mario a flashback about how Mario didn't help him when he got in a fight with the Master Hand.
Yoshi later appears in Mario Quits where he is the runner up for Mario's replacement, but loses because he kicks Lakitu with his messed up legs.
Yoshi made a small appearance in Time Freeze where Mario asked Yoshi what the time is, but he was frozen like the rest of the world.
On this blooper, he doesn't actually appear, but he's one of Mario's fail disguises which the guards realize is a disguise when they realized Yoshi can't talk.
Here, Yoshi steals Mario's wallet which causes an all out war between him and Mario. This video marks his first major appearance and his first antagonistic role.
Yoshi made a small appearance in this blooper where Mario was going to use him to track SMG4 but he jumps off the bridge and explodes.
Yoshi helps Mario to climb a wall, but fails and also Mario shoots him.
Way 84 is Yoshi Problems. Specifically, Mario is riding Yoshi when the dinosaur suddenly jumps off a cliff, taking the plumber with him.
In one skit, Mario eats a mushroom and gets sent to some weird Yoshi Sex Dungeon/Island.
Mario gets a pet Yoshi. This marks his second major appearance since Wallets And Dinosaurs.
Jbro109 and Yoshi sing and dance to "The Watermelon Song", when a message pops up stating "DON'T HUMP WATERMELONS" after Yoshi explodes from doing so.
Mario enters Yoshi into a Yoshi race. This is his third major appearance.
Yoshi accompanies Mario, Luigi, and Toad in this video and Yoshi walks the dinosaur at one point.
Yoshi attempts to teach children how to do their taxes by telling them they shouldn't pay them and they should hide from the police. Unfortunately for him, he is discovered by the police, and he gets arrested for committing tax fraud.
SMG4: War of The Fat Italians 2018 Edit
Mario and SMG4 attempt to make Yoshi pay his taxes, but neither breaking his entire house with an army (Mario's attempt) or threatening his child (SMG4's attempt) can make him pay it.
Yoshi is seen riding on a sleigh while shooting at a tank, who is chasing Yoshi while yelling, "STOP BREAKING THE LAW, ASSHOLE!" Bob, having witnessed it, says "Sigh. Even Yoshi has someone for Christmas, and he's been on the run for ages."
In "Problematic Pipe Problems", Yoshi appears briefly helping out the bros stop King Pipe, but when Mario reveals Yoshi's sole role was to make omelettes for the gang, he runs away from the bros in a blind panic, prompting the bros to chase him, with that chase ultimately costing Yoshi his life.
Smg4 also plays as Yoshi in several other games because there is no color code for him in those games. For example, in Race for Golden Overalls, he appeared as a red Yoshi in Super Smash Bros., and in Mario Kart he was just Yoshi.
Yoshi has a few small cameo appearances in the Ssenmodnar Series.
He appears in Super Smash Each Other in the Ass Bros. in SMG4: Mario The Ultimate Gamer.
Yoshi, like much of the other characters, has a few special abilities:
Most recently, in The Great Yoshi Race, Yoshi survived getting blasted by a nuclear cannon twice, slight abuse during the race, and gains his most absurd feat in the end; he goes up against Bowsers "Yoshi", a very violent and savage beast, and, implied that the "Yoshi was not holding back whatsoever", Yoshi easily survived for 592 rounds straight. He is also seen to be able to survive a full blown explosion and survive drowning in WOTFI 2018.