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Saw this movie/TV series the 90s, though could have been made in the 80s. It was a live action show.
- Boy meets a scientist, who can open a portal to different worlds
- They are being chased by an evil scientist, who wants to destroy the world. He follows them from world to world, attacking them.
- Each movie (or TV series? I can't remember) has them going to a different world. In one, war has destroyed the world, and now only human like dolls exist in a carnival type world. In another, they go to a world they are are tiny, and a little baby chases them.
- Boy meets with a girl from the future, who has been fighting all her life, and is surprised to hear our hero's world is peaceful. In other episode, they come to our normal world, and the girl has to pretend to a normal teenager.
In the end, we find that the
Scientist helping the hero was the bad guy, and the evil scientist they had been fighting was actually trying to save the world.
Hero saves the world, of course.