Knuckles spikes dont look right to me, they seem to go to far back.
EDIT - Also the Spin dash sprites look to big, they look maybe even bigger then knuckles.
OFF TOPIC - I lol'd at your reason for 'Why not to give Knuckles a gun.'
EDIT - Also the Spin dash sprites look to big, they look maybe even bigger then knuckles.
OFF TOPIC - I lol'd at your reason for 'Why not to give Knuckles a gun.'