Originally posted by KingD19
The one time it was blood, was with Omega Red, and it was a stupid issue, apparently his spores were affecting Colossus in his metal state(which shouldn't be possible), and he wasn't full metal in that issue, he only had metal skin.
No it made quite a bit of senses. His body was absorbing colossus life energy and were he made direct contact was turning to flesh. Which actaully makes senses given Omega reds powers. He never shown to bleed in his metal parts.