Super Sonic Boost

Super Sonic Boost (スーパーソニックブースト, Sūpā Sonikku Būsuto) is Super Sonic's up special move in Super Smash Flash 2. Sonic covers himself in yellow energy and rockets in the direction pressed, during which time the player can freely move left to right. Any foe caught in the energy will also rocket upwards until the attack ends at which point they will sometimes be sent flying further.