I doubt his sword even has a blade. If you want him to use the sword, you would need to make one, which won't be easy...
Hex out the hilt in the sheath for starters. Then you'd need to swap in a sword and all the sword-related graphics (I recommend Link's). When the sword isn't in use, move it into the sheath, and when it is, back into his hand.
I probably didn't explain that very well, but that's how I would go about it.
EDIT: ROB Rocket pics!
Whoosh! Fiery jets shoot out the back.
The wings fold in occasionally.
This guy has a huge shield, but it has to be moved to actually block anything.
It may be a giant missile, but this thing's got some moves!
DO A BARREL ROLL!