Mr.T during his "Clubber Lang" years
Because no matter what people may say, Mr. T was and still is... a badass.

Optimus Prime
He's the leader of the Autobots ... nothing more needs to be said.

Darth Vader
Seriously, what would you think if Darth Vader was walking down the street alongside Mr T and Optimus Prime and they were looking like they wanted to kick your ass?