Rumble is a Decepticon from the Fanon Unicron Trilogy continuity family.Rumble may look like a typical Scrapmetal at first glance, but he actually has sentience, and more works with Soundwave and Sideways rather than other Scrapmetals. He normally helps Soundwave and Sideways by demolishing any potential obstacles that may stand in their way. He did have a twin brother named Frenzy, but he was killed and rebuilt into the Cobybot.
- Rumble was the Japanese name for the Scrapmetals.
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