I was thinking like a amored skeleton wih the head on fire.... but no a puny looking skeleton with like 3 pieces of armor.... a Nasty looking pile of bones with a heavy armor with spikes etc. etc.

my other idea is to give him a humal look... just for bonus... to see how corpion looked like before he died

Scorpion's Human form can be seen in his Mk1 ending.

You know Kamionero, I've always thought it would be cool to feature Human Scorpion as a secret character...just for the Hell of it. Like, say if in his MK:D ending, is deeds against the Netherealm earn him the respect of Raiden and the Elder Gods and they allow him to return to his human form...then boom, you can play as Human Scorpion as a secret character. I think it'd be pretty cool, though personally I'd rather keep Scorpion as a spectre...so much damn cooler.

i like the skeleton scorpion idea - have torn up yellow and black ninja suit and burning eyes. add bits of armour, spiked boots etc