steaming gango

a grey slimy goo and cant eat people because its small but only feeds on the humans head, and 3 forms and he only forms if he eats 10 heads and the forms are: form 1: normal and small slimy goo only 1.0 meters small, then form 2: a bit bigger but still slimy grey goo and has long arms now and 2.0 meters, now form 3: alot bigger now 3.7 meters and big hands and arms and throws up alot of big grey liquid