This one's more an exercise in building than an attempt to make something viable.
I used the giant bionicle sword as the main body, to see if it could be done. I still want to add some sort of wings to the "T" pieces that comprise the shoulder area..
The "hands" also need work. While the translucent pieces would make nice gun blasts, they don't work for this design.
Toys'n'Bricks discussion thread.