FazDude
Smash Master
Resubmitting Fred.
I know the sane thing to do would be to submit a major character like Squidward or Mr. Krabs. Since those are probably going to be submitted anyway, I want to start with someone who isn't nearly as important lore-wise, but still a beloved character from SpongeBob.
...So rev up those friers, because it's Fred's time to shine!
Debut Episode: Reef Blower
Fred (also known as Incidental 1, Hank, Clint, or the "My leg!" fish) is a reoccuring character in SpongeBob SquarePants. He's just an average citizen of Bikini Bottom, usually finding himself injured as a result of the nautical nonsense that the town regularly sees, leading him to shout his iconic catchphrase.
That, on top of an entire episode dedicated to the character and his running gag, has made Fred one of the most iconic "Incidental" characters in SpongeBob, and I can't think of many characters who'd be better to represent a common Bikini Bottomite than him.
As a fighter, I'd imagine he'd be a fairly straightforward and everyman fighter; Kinda like how Villager is designed in Smash. He could use everyday household objects to fight, as well as some references to other Bikini Bottomites (such as throwing a burnt shake). And of course, I don't need to tell you what one of his KO screams would be.