What are the benefits of changing Sonic's Ev and Mask textures?
Also, whata bout that metal00 texture that is on all the models?
The mask textures control where on Sonic body the shine of the env0 textures appear, And as for the env0's themselves, Here's what they are for:
env01 - Shine in Sonic's body
env02 - Shine in Sonic's shoe buckle
env03 - Shine in Sonic's shoes
env04 - Reflection of Sonic's sphere
And the metal texture that every character has is obviously the texture that appears when a character uses a Metal box.