Harlan Mason

The Slime Man.

Originally a short man in the double digit weights who made a living doing odd jobs and could often be seen at local punk and metal shows bumming cigarettes and beer from people. After accepting a job offer from a scientist named Dr. Alan Zera, he was subjected to painful experiments that would eventually reduce his flesh and most of his bones to a strange green goop. After the lab was eventually abandoned, years passed and the goop gained sentience and eventually regained Harlan's memories leading up to the experiments.
After some training he managed to form a large muscular body and was able to control the shape and firmness of his new goopy body. Taking the last part of his old body (his Skull), Harlan has begun a quest to find and kill Dr. Zera by any means necessary. Though many don't know his name, word of mouth has spread about a strange slime man and his tendency to dish out ultra violent justice.