Bulkhead. Now, hear me out. Who is Bulkhead? He's a big, lovable, clumsy, badass big bulky green Autobot. His clumsiness has gotten him in trouble with Ratchet ("I NEEDED THAT!!!")Arcee notes it once ("[A malfunction] caused by Bulkhead... remember the time he walked into power lines? Who knew he could dance like that?"); and even Optimus noted his large size was a hinderance to him ("Bulkhead may be... too large for this world...") He's always the butt of jokes ("I'm not surprised, considering the size of your backside."; "Who's the boyfriend?"; "You're a big one... this could take a while.") from Autobot and Decepticon alike. YET, Bulkhead has stepped up to the plate when the chips are down a few times. *When Arcee and Bumblebee likely would've been killed by the two Eradicons, Bulkhead's mere appearance scared the 'Cons off. *Bulkhead scaled the side of the Nemesis itself to dispatch Eradicons shooting at the kids, and unknowingly helped deter Megatron's plans for Cybertron (later noted by Optimus). *Bulkhead even took the blame for Arcee and Miko (even though some of it was his fault) when Optimus got onto him after everyone got home. *Bulkhead used himself, already half-eaten as it is, as bait for the Scraplets to get them into the Arctic ("Ready for the main course?") - saving all five of the Autobots, yet wasn't thanked on-screen for his near-sacrifice as an all-you-can-eat-buffet for the Scraplets. *Bulkhead saw through Makeshift's tenure as Wheeljack (though this can be chalked up to simply having been best friends with Wheeljack anyway) *Bulkhead was able to dispatch Knock Out and Breakdown by DUCKING, and fought against massive Energon loss to own Starscream, and destroy the Energon harvester ("What I do best... BREAKING THINGS!!!") In all of these events, Bulkhead was the first to step up to the plate to bat, and boy does he bat. He doesn't let the regular picking and teasing bother him, nor the insults about his size, even from his own teammates. It's more likely that if Optimus were incacipated or killed, Arcee or Ratchet would take command. But I think Bulkhead would have a shot, or at least make a good acting leader, without Optimus. Based on his sheer determination, motivation, and times he's really stepped up to the plate. Your thoughts? I know there may be some holes in my post here, especially in the list of events.