I don't know too much Transformer lore xP
Here is my rendition of the recently memetic "Badassatron" from Transformers One. During the battle to reclaim the Elements of Harmony, Starscream has banished Bumblebee straight into the Dead Universe. For the regular universe, it's only been 3 Earth months since then, but for Bumblebee, a few thousand years have passed, during which time he reformatted himself and gained a split personality disorder to cope with his newfound loneliness. The Dead Universe truly is that chaotic. When Bumblebee finally returned to Earth, he was basically no longer the same. Driven murderously insane by centuries of isolation and the Dark Energon of the Dead Universe, he renamed himself Badassatron and started killing sentient beings. Will Bumblebee ever return or will Badassatron take over completely? Only time will tell.
I don't know too much Transformer lore xP
Maybe you should read the past entries for Transformers Beast World.