Lightning speed. Gnashing of teeth. A wake of masticated corpses and ravenous offspring.
Imagine injecting a bipedal chainsaw with lightning, and giving it an unlimited means of reproduction. That is a chomper.
The chomper never finishes a meal, it merely chews on its victims until they are no longer moving. When the saliva of the beast comes in contact with enough blood, mainly that of its victims, another chomper will form from the viscera of the dead within the next twenty-four hours.
In ten days a chomper will reach full maturity, towering just over ten feet tall.