Superglide is an ability in the Kingdom Hearts series. It is a form of movement ability.
Kingdom Hearts
This shared ability is gained after the player defeats Chernabog in End of the World. It works Similar to the Glide ability, however with the use of the square button instead of the circle button. unlike the later gamenes where only Sora can Glide and Superglide, anyone in your party can superglide. (Including side characters like, Tarzan or The Beast, however, the beast is the only one that makes any use of this.)
Kingdom Hearts Re: Chain of Memories
This ability is gained in the remake of Kingdom Hearts: Chain of Memories for the PS2, as is Glide. Superglide is gained by opening a chest in the Room of Rewards in Castle Oblivion's 13th floor.
Kingdom Hearts II
This ability is gained by getting a level 7 Final Form and is called Glide MAX. It is useable only in Final Form, however, upon obtaining level 7 Master Form one is also granted Glide Lv. 4 for Sora.