Raphael racing on Laotora 4.
Laotora 4 is a planet. In the 2003 TMNT TV series episode Across the Universe, Ultimate Drako sends Raphael from Earth to Laotora 4 in a crossover with the Planet Racers. The planet is considered the most hostile planet on which the race has ever taken place.
The action takes place in three different areas of the planet; one planet, three days. Day one of the race happens in a desert type landscape and it is into this one that Raphael is dropped by the Ultimate Drako. Day two takes place on the true frozen wastes occupied by giant ice worms. Day three takes place in the moonlit rainforests controlled by the Mud Riders, who are cannibals.