Major Alan “Dutch” Schaefer was a soldier and the leader of a team of commandos. In 1987, the U.S. military and the CIA hired Dutch and his team for a rescue mission in the jungles of South America. He later finds out it was a set-up to get his team to take out the rebels in the area.
Vote which fictional character would naturally fit in-universe with a big-named franchise! No time-travel, no interdimensional crap, no "Pooh's Adventures", they would just exist in-universe.