Servant and master
Whis is the one who woke up the god Beerus from his thirty years sleep in the Dragon Ball Z anime series. Being the one who woke him up, Whis becomes his master but given the power of Beerus, he is also his servant and advisor. Indeed, this one being strangely immature, he needs the advice of the wise Whis to achieve his goals. Beerus, and therefore Whis by extrapolation, is one of the greatest enemies that Son Goku will have to fight, this one having been awakened by the fact that Goku managed to reach the state of Super Saiyan God.