The Lava Bomb takes the form of an orb of lava with fire spikes protruding from it.
In gameplay, the Lava Bomb can only be obtained at random from Item Boxes by Blaze. As with all other Items, Metal Sonic can also use the Lava Bomb if he uses the Steal Item to steal it from the aforementioned user.
When using Lava Bomb, it will place itself in front of the player directly ahead of the user. It has infinite range, like Lightning, and will both deal large amounts of damage and slow its targets down when collided with. Also, when a character is upgraded to level 4, 10 and 16, the Lava Bomb will deal even more damage.
In order to avoid the Lava Bomb, the player has to either jump over it or switch to another lane fast.