The Spring Jump (スプリングジャンプ Supuringujanpu?) is Sonic's up special move in Super Smash Bros. Brawl, Super Smash Bros. for Nintendo 3DS and Wii U and Super Smash Bros. Ultimate, which acts as a personalized spring, causing a spring to immediately appear underneath him. When used, it shoots Sonic up a great vertical distance. The spring can also be used by other characters if it remains in place for a while.
When used on the ground, the spring remains in place for a while, allowing other characters to use it, too. If this move is used in the air, the spring falls downwards, acting as a projectile that deals 4% damage and horizontal knockback, making it effective for edge guarding. After using this move, Sonic still retains the ability to use normal aerial attacks and air dodges, but will be unable to use special moves until he touches the ground. Additionally, this move does not allow Sonic to grab any ledges onstage (i.e. auto-sweet spot) until he is finished gaining vertical distance, making it dangerous for recovery if Sonic goes above a ledge and exposed to an edge-guarder. Barring any outside influence, the spring will remain on the ground long enough for Sonic to do three jumps off of, disappearing just as he makes his third jump.
If Sonic bounces off a previously set Spring, it doesn't count as his third jump as long as he doesn't land on it immediately from his up special, so he can use Spring Jump immediately afterward, gaining a great deal of height, essentially two back-to-back up specials.
- Double Spring: "Doesn't spring as high, but the move can be used twice in a row without landing."
- Springing Headbutt: "Spring straight up and deliver a headbutt. The spring doesn't stick around, though."