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 is the main antagonist of the Dragon Ball Z: Battle of Gods film and 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, Cooler, 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. Beerus once lost an arm-wrestling against one of the other Gods of Destruction, in the anime it was implied to be Belmod, while in the manga, it was Quitela. Once every one thousand 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, 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".
One time on Beerus' birthday, he ate the only Puff-Puff fruit that was on his cake. Champa got furious because Beerus ate it and it was also his birthday, both Beerus and Champa fought throughout the universe, destroying multiple planets. The two are eventually stopped by their attendants because their destruction could lead to the end of the universe, but both Beerus and Champa established they did not care. Beerus and Champa have an agreement "not to have fighting showdowns, but rather have food showdowns instead".
In the manga, at some point in time, Beerus participated in the All Universe Hide and Seek Tournamentheld by Zeno. But when he hid and fell asleep for fifty years during the tournament, it had to be canceled. Zeno, who was enjoying the event, became furious and had to be calmed down by the gods from the 11 universes. Since then, the other Gods of Destruction have felt disdain towards Beerus.
One time when Beerus woke up, he sneezed and blew up of two of his world's Suns, causing Whis to re-do time preventing him from doing it again. At some point in time, Beerus met Frieza. The two got along fairly well as they both enjoyed destroying things. However, one time Frieza got carried away and caused Beerus to get angry, with Beerus fighting Frieza and easily defeating the tyrant. Beerus also claims that he once went to Earth, and dinosaurs "took a rude attitude" toward him, so he wiped them out. Another day, King Vegeta treated Beerus and Whis to a feast in his palace on Planet Vegeta and Beerus used the Saiyan King as a footrest while he was eating. Prince Vegeta, who was just a child at that time, saw this and became upset, but remained silent. In Dragon Ball Super, Beerus punished King Vegeta because he gave him "the second-best pillow in the universe but wanted the first" which King Vegeta took, this resulted in him greatly injuring the king, and easily defeating Prince Vegeta - who attempted to attack the god. Before going to sleep, Beerus ordered Frieza to destroy Planet Vegeta because they annoyed him, and partially because of Frieza's fear of the Saiyan's power.
In Age 739, Beerus is told a prophecy by the Oracle Fish that in thirty-nine years, he would face an opponent that would excite him called, the Super Saiyan God. After he is told this, Beerus goes to sleep.
In the Legacy of Chris Thorndyke, Beerus is still the 7th Universe's God of Destruction, but when he heard from Zeno that one of his warriors is getting a promotion of becoming a herald/disciple (or technically speaking a God of Destruction) to Zeno, which Beerus thought it was Vegeta, but as it turns out that it actually Goku, but for telling Goku that being one of Zeno's followers is a really big responsibility, but he feared, along with Chi-Chi that if Goku would do something 'stupid', but what Goku did realize for one thing that Moro is his biggest concern, even if Moro is after Zeno.
And he is reprised by Jason Douglas in the English dub and Koichi Yamadera in the Japanese dub.