Head: Depth Charge, with antennae from a Kinder Egg toy fitted in.
Helmet/Head: Depth Charge head with CLAWS Commander helmet and Kinder toy antennae
Body: Material Force Microman
Armour: Green Stuff
Rocket Lance: Stikfas Omega Knight Spear with Rocket from Stikfas Delta Boy Extreme

Once I had the Acroyear figure done, I just had to do a custom of this character to go with it.

The articulation on the Material Force body is perfect for this character. I toyed with the idea of doing a removable helmet, but When I worked out the dynamics, it would have looked over sized on the figure, so I went with interchangeable heads. I had a few spare Depth Charge heads in my 'Heads Box', so I just modified one with a CLAWS Commander helmet. The antennae on both version of the head are from a Kinder Egg toy. I am a convert to Green Stuff now. I sculpted both the armor and the feet using it. The fins on his arms and legs are strips of styrene sheet stuck in into fast drying two part epoxy clay on his forearms and calves