Bob-omb, known in Japan as Bomuhei (ボム兵, lit: Bomb Soldiers) is a walking living bomb enemy that has appeared all along the Mario series. It originally first appeared in the non-Mario game Yume Kōjō: Doki Doki Panic, but was introduced as a Mario character in the western localization for said game, Super Mario Bros. 2. It has two white eyes, a fuse, two legs, and usually has a wind-up mechanism on its backs but is not necessary.
In Super Smash Flash
Bob-omb appear alongside normal items in Super Smash Flash. If the player press attack near a Bob-omb, the player can pick it up, and press the attack button again to throw. When thrown, it has huge knockback, and causes 34% damage. Because of SSF's damage set and physics, a glitch that cause more than 1000% of damage may occur if a player throws a Bob-omb at a chain of, either, other Bob-ombs or activated Motion-Sensor Bombs with another player standing on them without knocking-out him.
In Super Smash Flash 2
In Super Smash Flash 2, it appears as a dangerous item that can be picked up and thrown, they have a small yet powerful explosion on contact. Unlike SSF, if it is left alone for too long, however, it will light its own fuse and start walking around, blowing up when someone touches it, either directly or indirectly, or after a 15 seconds pass. Attacking or hitting the Bob-omb makes it explode instantly so players must be careful. It can do up to 27% of damage.
Bob-omb as it appeared in Super Smash Flash.
Bob-omb's updated design in Beta.
Bob-omb's first early design in Super Smash Flash 2, never used in the game.
Bob-omb's second early design in SSF2, used from v0.7 to v0.9b.