Mephiles has a crystalline demonic form in Sonic 06', with eyes like this once he transforms. So I'm assuming this is this artist's way of showing hints of this Mephiles's more demonic nature, and to put emphasis on the fact he was "looking" for Silver with his demonic abilities.
Mephiles has a crystalline demonic form in Sonic 06', with eyes like this once he transforms. So I'
