Beerus is the God of Destruction of Universe 7. He is accompanied by his martial arts teacher and attendant, Whis. Beerus' twin brother is Champa, the God of Destruction of Universe 6. Beerus was the main antagonist of the God of Destruction Beerus Saga but becomes a supporting character in later sagas.

Out of the many gods in the universe, Beerus is the most feared. He is feared by the Kais, Supreme Kais, King Cold, Frieza, King Vegeta, Vegeta, and even Shenron himself. As a God of Destruction, he is tasked with maintaining balance in the universe. Beerus is the God of Destruction of Universe 7, and his administrative zone includes planet Earth. He slumbers for several years to several decades straight, and he destroys planets in his administrative zone during the few years when he is awake. This is because destruction is required in order to create new planets, but he does not act on the Supreme Kais' orders, nor does he try to coordinate his actions with them; the god destroys according to his own judgment. Also, because he is quite capricious, Beerus destroys even important planets "without a second thought". When he finds it bothersome, he lets someone else act as an agent of destruction. While he is awake, tense days for the Supreme Kais continue, as nobody knows how many planets will be sacrificed.

Having existed for hundreds of millions of years, at some point in time Beerus was trained in martial arts by Whis. Once every 1,000 years, the Supreme Kais and the Gods of Destruction go to each other's realms and hold a coordination meeting. During one of these meetings held 75 Million Before Age, they got into an argument "over some trifling situation", and the short-tempered Beerus sealed the Supreme Kai at the time away inside the Z Sword, as it would not have been proper for him to destroy the Sacred World of the Kai itself. Once, he stopped by the Time Nest and met Chronoa, the Supreme Kai of Time. Another day, he stopped by King Kai's planet, which was larger at the time. He and King Kai played hide-and-seek (or a car-racing video game depending on the version), and Beerus lost, so the planet was destroyed by the peeved Destroyer. King Kai then took a large leftover fragment, whittled it down to a sphere, and built a road on it so that he could have fun driving there. This became King Kai's current planet. In "Showdown on King Kai's World! Goku vs. Beerus the Destroyer!", Beerus claims that he made his planet smaller because he "didn't like the food".

Beerus is powerful, yet lazy and playful (like most cats). His similarities to cat-like behavior also display in his love for long sleep sessions and how he grooms himself. Beerus is always in a bad mood when he wakes up from his deep slumber, but becomes less grumpy the more awake he is.