Wormfood is a mass of sentient hive worms. He does not know how he came to be; one day he simply existed with self awareness. Soon thereafter he had his first contact with a human being and upon touching, he instinctively moved into the human. From there he took over control of the body, able to access the various functions of a human body. He also found he could interact with human society. The problem was that the body soon deteriorated within a year, so he took to claiming new bodies as needed.
He eventually found Alienist and together they formed the Bodysnatchers, a duo who specialized in kidnapping people. However, while he can take the form of a body, he is still a mass of worms and each battle he finds himself in causes the loss of some of his mass and each time a part of himself died as well. He has now approached the time where it is getting harder to maintain himself and his bodies. In effect he is dying and he has no idea of how to stop it.