Maybe a Dragon Ball Z crossover would be better. It would take place during the Namek Saga when the Dragon was summoned by Dende but Frieza shows up early that causes Dende to make a difficult wish to escape. He wished to for Krillin, Gohan, Piccolo, Vegeta, Nail(despite he’s about to die but still fuses with Piccolo), and a slow, steady recovering Goku to Aang’s world. Somehow Frieza follows and even his own army gets involved ( like the army from Resurrection F) including Ginyu, who was stuck as a frog. The heroes are separated: Goku, Krillin, Gohan with the Gaang, Piccolo with Dende, and Vegeta with Azula,Ty Lee, and Mai. That’s all I can put together. Thanks!