The Viltrumites get the ability to wander the multiverse and want to take over, destroy:
1. They arrive at Planet Vegeta (before Frieza destroys it). They announce they will take it over. Saiyans being just as aggressive as them - resist
2. The DCU - Darkseid, having lost his army of Daxamites in the Great Darkness Saga, says to himself that here might be another army of 3 billion supertypes. Can he mind control them and start over?
3. The planet of the Valheru in the Feist Universe, when the Valheru are at full strength.