Once an ordinary pumpkin, Jathryx is now one of the most feared magic users known to man and undead alike. How did this large transformation take place? It involves a princess, 2 unicorns, and... wait, wrong story. It involves 3 scientists and a square pumpkin breeding gone wrong. Those 3 scientists never agreed and always tried to outdo each other. The first one made a square pumpkin. The second said, "Square pumpkin? We've been doing that to melons for a while!" He took a few days to trump the first, but did it with a triangular pyramid-shaped pumpkin. The third one thought of it as just a slight variation of square pumpkins, so he went for something new: animated pumpkins. In attempts to not be topped, however, the second scientist secretly added some poison into the third's machines and formulas. This corrupted the process, and the result? Jathryx, a humanoid pumkin with an evil heart.

The contest page: http://www.planetminecraft.com/forums/official-pmc-halloween-skin-contest-weeks-prizes-t20545.html