*squeals like a crazed fangirl* EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE BOTH,HE SHOULD TOTALLY SING NUMA NUMA XD!!! PS. आप gave me an idea for a picture for DA
My opinion says that he could be singer. Sonic would be best on guitar, not because of Sonic Underground though. Shadow would probably be good backup vocals.