It's our skeleton Rider and Voice of Unity, Blue! I have yet to fully color him, but I have a sketch of him and his warhammer!
And yes, he wears a metal skirt inspired by Viking armor!

And here be Fyrnhamarr! Ignore that weird ant thing on the side, I was too lazy to erase it!

I've also tried to draw Unity's funky form, but I personally don't really like how it turned out. Still want to post it though, so just take this with a grain of salt.