(ビルス), also known as the God of Destruction Beerus(破壊神ビルス), is the main antagonist in the movie Dragon Ball Z: Battle of Gods. A powerful, confident, and downright obsessive hothead, he is the God of Destruction within the Seventh Universe and, as such, his occupation is to maintain balance by destroying planets. 
Out of the many gods in the universe, Beerus is the most feared.He is feared even by Kais and Supreme Kais. As a God of Destruction, he was once tasked with maintaining balance in the universe. Beerus is the God of Destruction of the Seventh Universe, and his administrative zone includes planet Earth. He slumbers for several years to several decades straight, and he destroys planets of 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 Supreme Kais' orders; the God of Destruction destroys according to his own individual judgment. Also, because he is capricious, he 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 Kai continue, as nobody knows how many planets will be sacrificed.
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 roughly 75 Million Before Age, they got into an argument over some trifling thing and the short-tempered Beerus sealed Old Kai away inside the Z Sword, as it would not have been proper for him to destroy the Sacred World of the Kais itself. Another day, the God of Destruction Beerus stopped by King Kai's planet, which was larger at the time. He and King Kai played a video game together, a car racing one and Beerus lost, so the planet was destroyed by the peeved God of Destruction. 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. Beerus also claims that he went to Earth once, and dinosaurs took a rude attitude with him, so he wiped them out. Another day, King Vegeta treated Beerus to a feast in his palace on Planet Vegetaand Beerus used the Saiyan King as a stepping stone while he was eating. Prince Vegeta, who was just a kid at that time, shockedly saw this and became mad but remained silent.
39 years before the events of the movie, the Oracle Fish said to the God of Destruction that a strong opponent would appear before him, the Super Saiyan God. During the events of the film in Age 778, alarm bombs explode, but Beerus still does not wake up. Whis tells him to get up and he says he will sing with a microphone if Beerus keeps sleeping. Since Whis is terrible at singing, Beerus eventually awakens from his long slumber and asks Whis whether the galactic overlord Frieza destroyed Planet Vegeta during his nap, saying theSaiyans and Frieza were very evil and King Vegeta was stingy. Despite the fact that Planet Vegeta was destroyed two years before Beerus went to sleep, he was unaware of it until he was informed of it by Whis. Whis then tells Beerus that Frieza was defeated by "a Saiyan known as Goku or Kakarot," and uses his scepter like a projector to show the past battle between Goku and Frieza on Namek. Next, Beerus touches anegg and destroys it. When Whis explains about Super Saiyans and some Saiyans including Prince Vegeta living on Earth, Beerus recalls his dream about him fighting with the Super Saiyan God and he then calls the Oracle Fish. The Oracle Fish does not remember it, but Beerus is convinced that it said so. Since he heard rumors that a Saiyan defeated Frieza, Beerus tracks down this warrior, Goku, on King Kai's planet. When he arrives on the planet, the God of Destruction complains that King Kai's planet is so small, but Whis reminds him that he is the reason it is so small for destroying it when getting mad after losing at hide-and-seek. Beerus questions Goku about the Super Saiyan God and, after Goku demonstrates the various Super Saiyan forms he can achieve, Beerus accepts Goku's challenge to fight. Beerus blocks Super Saiyan 3 Goku's punch and flicks him on the head. Next, Beerus repeatedly blocks Goku's punch and defeats him with a Pressure Point Attack, making him unconscious and reverting him back to his base form. Disappointed by the subsequent lack of challenge, Beerus departs in order to see if the Saiyan Prince Vegeta and the other Saiyans on Earth know more about the Super Saiyan God.
He arrives at Capsule Corporation, where Bulma's birthday party is held. The Saiyan Prince Vegeta seems to have met Beerus before, and he musters all of his excitement and casts aside his pride to put the party's unannounced attendee in a good mood. Beerus easily acclimates himself to the festivities, and even politely apologizes to Bulma for being rude. When Beerus asks Mr. Buu for one or two of the custard puddings he has, Mr. Buu eats all of them, angering the God of Destruction, who decides to destroy the Earth. Mr. Buu is blasted away into a lake by a Kiai from the God of Destruction. Android 18,Tien Shinhan, Piccolo attempt to fight Beerus and the God of Destruction easily defeats them one after another with some chopsticks. While Beerus retrieves Buu back from the water,Gohan powers up and attacks Beerus only to have his head slammed into Buu's. Beerus also faces Gotenksand quickly defeats him as well. Vegeta decides to fight the God of Destruction on his own after the other Z Fighters have been defeated, but he is ultimately defeated. While Beerus is about to finish off Vegeta, Bulma walks up and scolds Beerus for ruining her birthday party, slapping him. The God of Destruction returns the favor right back and responds with a slap of his own, only his is much harder. Seeing his wife being beaten, Vegeta explodes in a fit of rage starts knocking Beerus around for a bit. Vegeta's anger gives him incredible power, but as soon as his rampage is over, Beerus is just fine and the Saiyan Prince once again accepts his and the planet's fate.
Soon, Goku turns into a Super Saiyan God and faces Beerus again. They have a battle in space, right above planet Earth. The form gives Goku the power to resist Beerus, but he reverts to his regular Super Saiyan form due to the form's time limit. However, he learns the form's godlike feeling, which allows him to use Super Saiyan God power against Beerus. Beerus points out to Goku that Super Saiyan God's time limit ran out some time ago and that Goku did not notice because he was able to absorb Super Saiyan God power into his body while he was fighting. Beerus says that because of this, Goku did not greatly power down even after returning to normal.
The two seem to be equally strong at some point, but Beerus eventually wins when he uses his God of Destruction Super Energy Sphere. Goku stops Beerus' energy sphere, barely holding it back, and the screen suddenly blacks out. Chi-Chi and Goku's friends appear in Goku's mind, then he briefly transforms to Super Saiyan God again and absorbs the energy ball. Goku gets exhausted, and Beerus wants Goku to say "I give up" and he says so. Beerus stops the fight and they talk for a while before going back to the ground. Beerus says that the Super Saiyan God was not that strong and the Oracle Fish's prediction was a little exaggerated. Beerus reveals that Whis is his martial arts master and stronger than him. He also says that there are twelve universes, and the one Goku and his friends know is just one of them, the Seventh Universe. Beerus is the God of Destruction of the Seventh Universe, and each universe has its God of Destruction. On the ground, when Beerus prepares to destroy the planet, he blasts only a small rock and says he has already run out of power. Whis asks Goku if he would like to be the next God of Destruction after Beerus dies, but Goku turns him down. To the pleasant surprise of everyone present, Beerus sincerely apologizes to Bulma for wrecking her birthday party and slapping her. Bulma accepts his apology and invites him to her next birthday party, promising that he will get a whole swimming pool of pudding to enjoy. After making peace with and befriending the Z Fighters, Beerus and Whis return home.
Beerus tells Whis that both Goku and Vegeta might become formidable foes before long. While they are eating sushi, Beerus tries some of the wasabi. However, the sheer spiciness of the wasabi turns his face red and drives him into a hysterical rampage, flying around at high speed and destroying the moons around his temple in the process. Whis flies in and karate-chops Beerus out, then reminds his knocked master to brush his teeth before sleeping for three more years.