So... a few months later but I managed to get and play Transformers: Fall of Cybertron. And I bet you can all guess the reason too.
That's right, Dinobots, especially Grimlock here. But, you're probably wondering, why is he wearing a bow-tie? In the game, during the loading screens, there are tidbits of trivia, tips, and quotes from the original cartoon show. During one of those segments it says the following:
Grimlock is a Transformer with many talents, his ability to wear a bow-tie, and make it look good, may just be his finest.
Or something to that effect. And thus, here we have the leader of the Dinobots, Grimlock the king himself, sporting a fetching bow-tie.
Might make a print of this, don't know how it'd sell though.