Future Charlie is the version of Charlie from the future. In Charlie's Time Machine, Oobi went into the future and met him, along with Future Max. Being the same, unaltered person, Future Charlie acts and does the same things as Charlie. He is a minor protagonist, and portrayed by Buckteeth.
Future Charlie looks exactly the same as the present-day Charlie. He has white irises and green pupils, and a tanish-colored hand.