F-Type is one of the selectable cars from Stunt Race FX, a racing game released for the SNES in 1994. The game utilized the Super FX chip (the very same used in Star Fox) which allowed for unprecedented 3D graphics at a time where they were mostly unheard of. Star Fox and Stunt Race FX both pre-date Doom!
Stunt Race FX didn't really have much for story or context. It was mostly a cartoony and lighthearted racing game where you raced cars with big goofy eyeballs. The music and atmosphere were great and the arcade-style gameplay was decently challenging. SRFX was a simpler racing game all about beating the opponents and the clock fair and square, which turned out to be more challenging in practice than you might believe. No weapons, no attacks to your name, just good old fashioned racing to the finish. You had limited health and lives, and sustaining too much damage by crashing into trees and barriers, or falling into the ocean, would spell your demise.
Well, because Stunt Race FX is one of my childhood games that I loved. And since I'm feeling kinda disappointed by the base roster choices in Smash Ultimate, I think it'd be a supremely fun idea to have a literal living race car in the game as a wacky retro character.
How would he play?
Being a speedy super-heavyweight (because, you know, he's a car), F-Type would be an oppressive in-your-face character who barely gives you any room to breathe with him constantly speeding into his opponents and battering them with his tires. Armored moves would be plentiful, and he would even be able to negate certain projectile attacks by charging at full speed. He would also be able to sacrifice some of his health in an explosion that is supremely deadly if it manages to connect.
(Incidentally, like Inkling and Charizard, he takes damage while in the water. Falling into the ocean in Stunt Race FX meant instant death for the poor guy!)
B: Peel Out / Rocket Start
F-Type will rev his tires in place until they turn scorching red from the frictional heat. If he presses the B button a second time while the tires are hot, he will instantly take off at maximum speed in the direction he's facing (rocket start!), crashing into anyone unfortunate enough to be in the way. While his tires are red, they will also lend a flame effect to his jab, tilt and Smash attacks (which naturally use his tires). Sometimes taking off will also leave behind a trail of flames on the ground that damages enemies. The tires cool down quickly - they will return to normal after about 20 seconds if he does not use the Rocket Start.
Forward+B: Nitro Boost
This move requires some room to accelerate. He will begin boosting in the direction held, and be able to do a circular donut and change directions with a flick of the stick. If it is held long enough, he will be surrounded by a kinetic aura upon reaching maximum speed, granting him armor and negating projectiles. He is harder to control at top speed and needs some distance in order to brake, however, and during his stopping animation, he is vulnerable.
Up+B: Ramp Launch
Borrowed from the Stunt Trax portion of SRFX, F-Type spawns a ramp under his tires which he then drives up at great speed in order to launch himself upwards. If done in the air, the ramp will fall after his jump, acting as a downwards projectile and potentially spiking anyone underneath it into the abyss. Great for edgeguarding.
Down+B: Crash Out
This move damages F-Type, but if used properly, it can be worth it. F-Type will squint his eyes and begin shaking violently. Upon releasing the button, he will explode, sending out all his individual pieces in every direction and leaving behind only his eyes, floating in the air. After this, he reassembles himself. A small, uncharged explosion can function as a ranged smash attack, as he will send out his pieces a short distance before reassembling. However, a fully charged explosion will instantly KO the opponent at 0% if they are caught in the middle of it, much like Roy's fully charged Flare Blade. Depending on the size, the explosions do anywhere from 5-12% damage to F-Type each time he uses them. Not a move to be abused.
Final Smash: Bonus Trax
F-Type charges forward and crashes into his opponent. He knocks them onto a stretch of road where he enters TRAILER, his big 18 wheeler friend, who comes barrelling down the track and sideswipes all the enemies with his gigantic semi-trailer. With a cartoonish "KA-BOOM" onomatopoeia appearing on screen, the disastrous wreck naturally sends everyone flying.