|Characters and/or events depicted in this article belong to the real world and not any continuity.|
Pre-Production applies to every decision, characters and aliens that were made concerning a sequel series named Ben 10: Hero Generation before Ben 10: Alien Force started.
Eric Canete 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.