Love it, may I ask what bits were used? At least for the body and mech hands. My only guess is Final Faction for the power claws. he looks like a giant old school Chaos Warrior which is what I like to see.Slave ogryn leader is coming along under the brushes.
I agree the Captain's servo hand is too big for him. I'm glad you said it first so it's less rude for me to comment on it, lol. It would fit better on an Ork methinks.
I like the idea of two+ versions of the same character, can be fun.