Lions do have a very interesting social structure, with a dominant male overseeing a group of females that bear his cubs. The females go hunting and give care to the young while the male defends the group from invaders (other males challenging him or sneaky predators like hyenas!) and occasionaly helps out with hunting very large/dangerous prey.
So in essence, as there is only one male in a pride and he tends to be quite dominant, you could call him a Lion King! The females act very co-operatively and are generally considered equals so there isn;t a ‘queen’ per se.