1.Goku

2.Vegeta

3.Gohan

They will be teaching them how to fight, Ki blasts, etc.

As for the Super Saiyan transformations BROLY, KANE, AND CUMBER will unlock it through anger. Like for example if someone BROLY loves, if someone KANE loves, and if someone CUMBER loves. Gets hurt or looks like they are dead but not just unconcious. They get really angry and start to transform.