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Marvin

Marvin (formerly Mario) from SML (formerly Super Mario Logan) returns to the fray! with a familiar moveset and a fresh coat of paint!

Marvin is a bald lazy piece of ♥♥♥♥ who screams all the time, but he doesn't do that here because he realised now that it doesnt help him. Instead he pulls from a moveset of many tricks and references.
Examples include:
https://www.ssbwiki.com/Mario_(SSBU)
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for N-Special, Marvin retains his fire powers and throws a fireball, the fireball does low damage and can set up for combos, it bounces off floors and walls, and the animation for Marvin can be cancelled on landing.
F-Special is a roll which bounces off enemies or walls on contact, it doesnt go far but halts your aerial momentum, giving it many ways to be used for recovery
U-Special is a jumping uppercut with a vertical, slightly horizontal trajectory which puts you into freefall, before rising it has a strong sweetspot.
D-Special is a multi-hit spin with a strong ending hitbox, Marvin can move while performing it, it limits his downward aerial movement and can rise if the special button is held. additionally you can jump and use it to boost its upward speed.

disclaimer: this is a joke mod. and for the record so was skibidi toilet, believe it or not i made these on impulse and im not an avid fan of either of these, nor do i personally agree with absolutely everything that they or their authors present. i just continue with it because i think its hysterical.

easter eggs
-shrek alt has custom taunt/respawn platform, aswell as another taunt done by pressing down+taunt which definitely doesnt do what skibidi toilets alt specific dtaunt does and play a video (it plays the video where shrek craps all over the couch).
-info page 3 is just a transcript from smlwiki.com (big gore warning if you do visit), (Marvin's Corpse alt is also a reference to that websites home page)