Slag

Slug has a name that does not remind one of British whores. He's the most technically minded of Grimlock's Lightning Strike Coalition, though he also really enjoys melting Decepticons into slag.

Fall of Cybertron comic
Slug and the rest of the Lightning Strike Coalition were Autobots under the command of Optimus Prime, although they visibly chafed under his cautious and conservative approach to warfare. Although ordered to return to base, when leader Grimlock discovered that Swoop was in Decepticon custody, Grimlock ignored Optimus Prime's orders and broke rank to hijack a dropship. Good Intentions The group managed to track Swoop's signal to the Sea of Rust, where they prepared to attack Shockwave's tower. Secrets Although the group attempted to rescue Swoop from Shockwave's experiments, they were overwhelmed by Insecticons. Siege Mentality