Goku and Vegeta are Saiyan Rivals, Vegeta is always competing to be better then Kakarot (goku), But Goku always gets above Vegeta again, and Vegeta gets mad when that happens, but Vegeta always calms down and continues training. They both are great allys, But Vegeta hates Kakarot a bit, But they always come through if needed, Vegeta is extremely stubborn to work with Kakarot, or even fuse into Vegito or Gogeta with him, only if the world is at stake. Overall, They are great friends sometimes.