Top-Heavy is a realist, though others would call him a "nag". Daydreamy behavior like Skids's annoys the "down-to-earth" Top-Heavy greatly. Top-Heavy can change from rhinoceros to a radar-guided, triple-barreled, electro-pulse machine gun in less than an instant.
When Top-Heavy joined the Autobots on Earth in 1990, he was rebuilt into a robotic rhinoceros. His altmode remains a Cybertronian machine gun.
When the Decepticons took over Autobot City in 2014, Top-Heavy was one of the Autobots that guarded the trenches where the Autobots camped outside.
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