LUGNUT is the grumpy-yet-skilled medic most often found in Autobot City's repair bay. Although very dedicated to his job, his irascible personality makes him seem like he'd rather be someplace else. It might be the extremely long shifts he works -- although he claims to hate the medbay, he's seldom seen anywhere else. Attempts to cheer him up usually just lead to more gruff complaints, so by now most Autobots simply take his nastiness in stride as long as he continues to do good work.