Screambeast done by the marvellous Rhardo over on DA: http://rhardo.deviantart.com/

In the Marvel U rpg I play in James Worthington is the son of Angel and Psylocke who was a normal looking winged mutant until kidnapped by Apocalypse and experimented on - partly for revenge as Angel's rebelled against Apocalypse's control and partly to see what would happen. Apocalypse boosted his Psi and Sonic powers as well as buffing him physically, esp his fragile fathered wings.

Before the brainwashing Apocalypse was used could be completed though the X-Men managed to rescue him and after some recovery time he's returned to active duty though with a new name to reflect his changed powers and bestial form- Screambeast.

In City of Heroes he's a Sonic/Psi blaster.