Ugh, I'm sick of them reusing parts. Almost ALL of those Autobot Generics use parts from Scattershot.
The generic Autobots look a like like Scattershot to me too. The only original characters I see in this trailer are: Iron Hide, Bumblebee, Grimlock, Bruticus, Jazz, Swoop, Slag, Optimus, Megatron, Jetfire, Shockwave, Starscream and Metroplex. There might have been some other guys in the battlefield, but that scene is so fast and the video quality isn't good enough for me to notice any. Megatron might have beat down a known Autobot before Jetfire even, but that beat down happened in like a second, and no matter how many times I try to pause it before the hit, I see nothing but a blur. Megatron smacks the $#!+ out of folks faster than seconds!
Optimus looks really ridiculous. More so than Megatron, who doesn't look all that bad in certain shots. EDIT: wrong name entered
He's definitely a generic, it's the same guy(s) that were standing at the doors in the Bumblebee level.