Read more about Rumble at: Wikipedia

Official Site: Hasbro

Rumble is a fictional character in the Transformers universes. In order to trademark the name, Hasbro referred to the Alternators character as Decepticon Rumble.

The first toy for Rumble was originally released in an earlier Takara toy line called Microman. In cassette mode, the toy was able to fit inside the body of Cassetteman (who would later become Soundwave). When the line was imported to the U.S. as Transformers, the toy was released in two different colors as different characters—Rumble and Frenzy.

Rumble's colors changed over the course of Generation one, originally being red (leading to confusion as Frenzy was blue) in the original toyline and Marvel comics. The cartoon made Rumble the blue robot instead. Dreamwave comics, IDW comics, and even the recently-released Alternators toy all represented Rumble as a red robot. The Japanese dub of the original Transformers series switched Rumble and Frenzy's names around so that their cartoon appearances would match the colors of their toys.

His personality in both Marvel Comics and in the animated series was described as being a basic street punk. He was always ready for action and eagerly carried out Megatron's orders. He can cause earthquakes with his piston-like arms.

Rumble has not been a contender in any CBUB matches.