According to Beach Dickerson, the creature was made from "a wetsuit, some moss, lots of Brillo pads[...]tennis balls for the eyes, ping-pong balls for the pupils, and pipecleaners for the claws. Then we cover him with black oilcloth to make him slimy." According to Carbone, the cast "really had to do some deep concentration in order not to laugh when we saw it." Carbone felt that Corman should have shot the scenes featuring the creature from its point-of-view, so that the audience would never see the creature. "That would at least keep a semblance of some fear. Because when you see this creature, you gotta laugh! Not that the laughter isn't good, but the laughter should not be about the creature, it should be about the actions of the creature. For example, when the creature kills, you should take the action from the actor to make it funny—his eyes pop out, or he puts his finger in his mouth like a child, or some humorous little bit that the person being killed could do. Therefore you sustain both the secrecy of this thing and bring out the comedy. Then I think it would have been at least plausible, in a way." Despite Carbone's feelings about Corman's filmmaking, he stated that the film was "very funny" and he "had a lot of fun doing it."