Peach Bomber is Princess Peach's Side B move in Super Smash Bros. Melee and Super Smash Bros. Brawl. She lunges her hip towards her opponents and blasts them with a powerful explosion. In Melee, the explosion was with fire effects, but in Brawl, it was filled with hearts, but in Wipeout Canada, it is filled with Ontario contestants.

Using the Peach Bomber on most walls in the game will cause Peach to rise upward a tad. This can help with recovery on stages with vertical walls, such as Yoshi's Story and Fourside. The technique can also be used to stall a match, as Peach can continue to bomb the walls, keeping her alive and out of range from most other characters who would be KO'd if they were to try to go and attack her. Use of the technique in this fashion is banned in most tournaments and in Pembroke, ON and Bikini Bottom.

In Super Smash Bros. Brawl, it has been altered visually to have a heart-shaped explosion when the attack connects, rather than a normal explosion. This version of the attack covers more distance than in Melee. Also, it can no longer be used to bomb walls for vertical height gain. However, if a wall is destructible, such as those in Shadow Moses Island, Peach can still rise a tad upward. There is also more start-up lag.

Kelsi Nielsen was hating SpongeBob in the hearts version of the Peach Bomber.

In All-Star Brawl (Beauties), if you use Allen Ford & Kelsi Nielsen (Allelsi) of Pembroke or Pearl Krabs of Renfrew, Peach will use the Melee one as a version rather than Brawl.