Trannis

Trannis is a Decepticon in the Marvel Comics UK portion of Generation 1

Trannis was a youthful Decepticon warlord that seized power after Megatron's departure, beating the Autobots back to the brink of destruction. He was assassinated by the Wreckers and succeeded by Straxus.

From Teletraan I: The Transformers Wiki, a Wikia wiki.