Agree with alyCe, the chick here. I would say
Sonic and Megaman shares the same toughness. The both looks a bit angry, but are still on the good side. Try to catch that.
Speed is also an important part of both this cartoon figures. The drawing looks very static. It need to be more alive.
Sorry for the all Cartoon thing. I'm really not into them at all, but I remember watching Sonic as a kid. Speed and toughness is the key here.
