Silverstein's Fantasy Castings

every now and then i will post a picture of the actors/actresses for whichever idea of an adaption i have

you can help out and/or discuss any of the actors i have chosen or not have chosen, such as, if this actor is more suitable for the role than another.

i like pretending every male lead is owen wilson. it's fun.

anyone got any ideas for Optimus and Megatron?