Made in one afternoon to get myself to MOC again. He has a Sonic Gauntlet and a Wrist-Mounted Crossbow thing. Wrist attachment design credit goes to @ELE109.
Neat. The LEGO crossbow was a nice touch. However, visually I see no hints of any sonic powers. You should incorporate that into the armor or at least a weapon
On his right arm he has a speaker gauntlet of sorts, though I don’t expect you to notice it, as it’s not featured prominently in any of the photos. It’s made from Jimi Stringer’s shoulderpads in his Breakout form.