The Purple Graveyard Monster is the main protagonist in The Mystery of Monster Mountain (and Captain America) by Young David. The Purple Graveyard Monster lives in a jungle on planet oookkyy (which is, at most, 8,000,000 miles from Earth) and eats green gorillas. He was nice from age 3 up until his transformation into a monster at age 12. He owns a space ship that can travel 8,000,000 miles in a single day. On Thursday 1980 he travels to Earth, lands on the Mississippi River, and fights Captain America. His abilities include being able to hypnotize people and the ability to fire lasers.
The Mystery of Monster Mountain (and Captain America)