Cape

Cape, known in Japan as Super Cloak (スーパーマント, Sūpāmanto), is 's side special move in Super Smash Flash 2. It replaced F.L.U.D.D. in v0.2b of the SSF2 Demo. If it connects, it switches the direction that the opponent is facing and dealing 8% to any opponent it hits, but dealing no knockback. It can also reflect projectiles if timed correctly, and can be used to increase Mario's horizontal recovery. Mario can also use it to gimp other characters recoveries such as the Fox Illusion. If you use Cape after dashing, Mario will slide a little bit. The move is based off of the yellow cape in Super Mario World.

Ledge Cape-cancel
The Ledge Cape-cancel is a technique Mario can use in Super Smash Bros. Brawl and Super Smash Flash 2. It invovles Mario using Cape while on the ledge to regain invincibility frames he gained from grabbing the ledge. This increases the amount of time a player can stall on the ledge. When the invincibilty frames are up from being on the ledge use cape in opposite direction and then jump to regrab the ledge. This also can used to gimp opponents trying to recover. However, its usefulness in Super Flash 2 is called into question because in Brawl when he uses the moves he does not fall when he uses the technique so he can automatically regrab the ledge, but in SSF2 he has to jump to regrab the ledge leaving himself opponent to an attack in which he won't be able to recover due to him needing to use his midair jump to regrab the ledge.

Origin
Originating from Super Mario World, the Cape was a power-up obtained from the Cape Feather, which enabled both Mario and Luigi to spin and attack with it (although Mario did not hold the cape in his hand during the spin attack, as he does in the Smash games), as well as flying great distances after a running start and floating softly back to earth when falling. Mario did not "fly", rather, but "glide", but could do so more or less infinitely by diving and pulling up in a certain rhythm, and while gliding he could slam into the ground to create an earthquake capable of damaging all enemies on the screen. This is, of course, not present in the Smash games.