Some time later, Gordon updated his concepts. The heroes would still remain mainly humanoid but they would look more like monsters, animals, and some of them, aliens. Eric Canete, who also worked on Ben 10: Alien Force, was approached. His designs were more monster based and creepy looking, none of the transformations have visible Omnitrix symbols. Ultimately, the designs was rejected due to Cartoon Network thinking that they were not appropriate for children.