Ulic Qel Droma's younger brother and fellow Jedi Knight, he lost his arm in battle which he had replaced with a droid arm.
http://www.ranker.com/list/star-wars-fancast-cay-qel-droma/ryanwitalison,
Alex Pettyfer
Cameron Bright
Daryl Sabara
Lucas Till
Sean Flynn-Amir
Tyler Posey
Chord Overstreet
Dylan O'Brien
Luke Kleintank