watch 01:48 The Loop (Movies) Do you like this video? Dr. Nathaniel Essex is a mutant. Trivia His name appeared on the Department of Domestic Security and Defense computers in X2: X-Men United. In the comics,Essex is known as the villain Mister Sinister. Gallery External links Nathaniel Essex on the Marvel Wiki Nathaniel Essex on Wikipedia Retrieved from "https://xmenmovies.fandom.com/wiki/Nathaniel_Essex?oldid=116634" Categories: Mutants Male X2: X-Men United Cameo Deadpool 2 Stryker's Folders Stryker's Files Community content is available under CC-BY-SA unless otherwise noted.