Mario is a playable veteran startercharacter in Super Smash Flash from the Mario series, the only one to be available when starting a new game. Due to the game's limitations, Mario uses an abridged version of his moveset from the Super Smash Bros. series consisting of six attacks. Mario's sprite set was made by user Xander, which means they are completely custom made, who utilized a particular Mega Man 8-like style on the sprite sheet.
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Mario has excellent horizontal movement, good damage racking ability, and good KO power. He has easily the best projectile in the game, the Fireball, due to its very fast speed and firing rate. The Mario Tornado is a good turtling move, as it comes out fast, surrounds Mario on both sides, has a long active period, and has instant-KO properties.
True to his name, Mario has nothing that could really be considered a weakness, other than the possibility that Luigi is slightly better than him. This jack-of-all-trades characteristic gives Mario strong match ups across the board, resulting in his high placement.
Mario has an additional attack while jumping, resembling the Super Jump Punch, just without the coins.
Oddly, in the character selection screen of SSF, Mario is the only character that is facing to the left, while the rest are facing to the right.
The complete sprite sheet made by Xander actually has some elements from Super Smash Bros. Melee that were left out of SSF due to limitations. This includes Mario using his Cape or the coins from Super Jump Punch, to name a few.