I had hacked apart an innocent Transformer (Red Alert from the Cybertron line) and noticed the clear red shoulder had a 5mm hole. Could it be that simple? I inserted a 5mm peg and voila, new arms for my Devil Pirate! The red sword adds appropriate pirate flair.
The ruby hued Regent of Hell has arms and wings from a Diaclone Diatron/Kingdam. It's Staff o' Hell is from an Energon space jet and the drill is not from Arkon/Bullmark King Joe but a Beast Wars Inferno (the big red ant). For ease of posing I drilled a 5mm hole into his foot.
This happy fellow ripped the arms off an Energon Cruellock. I don't remember where the smoke colored missiles come from.
The Shield of Marine Defense is ripped off from a 1999 Microman Kit CrabDozer. The yellow belly button plug is from a Zoids Blox upgrade kit.
Sea-Borgs can be purchased here.