It's more of a rough sketch that I have for a concept of an ARMS character, but here's my fan art.
Tentatively called Magic Man, his aesthetic takes a bit from Doctor Strange & Kaldur'Ahm/Aqualad (the one from Young Justice). He doesn't actually have extendable arms himself, but he uses magic to conjure up said arms from the tattoos on his actual arms (as shown on the top-right corner of the picture) in order to compete, similar to how Mechanica resorts to tech in order to keep up despite her not having actual extendable arms. While using said magic, his eyes gain the spiral that the characters with actual extendable arms have, which goes away when he's not using magic. When blocking, Magic Man has to get rid of the magic arms & create a Doctor Strange-esque magic circle shield to protect himself since he's yet to master the art of his abilities.