Battle Royal Dome/Anime

The Battle Royal Dome appeared in Pushing the Fiery Envelope!, where, after witnessing the earning his 20th consecutive Battle Royal victory on TV, traveled to the dome along with  to take part in a special event, where any volunteers would get a chance to battle the Masked Royal. Ash's, having become agitated after seeing the Masked Royal's , jumped down from the stands, leading to Ash taking part in a Battle Royal, along with and.

Incineroar easily shrugged off all of the attacks its opponents threw at it, and was easily able to defeat Kiawe's Marowak and Sophocles's Charjabug with. Litten, however, managed to survive the attack, thanks to its sheer determination to battle its evolved form. After the Masked Royal revealed that he had been holding back, both he and Ash decided to get serious. However, this only resulted in Litten getting swiftly defeated by a -powered from Incineroar.

The dome reappeared in A Young Royal Flame Ignites!, where a group of Battle Royal Trainers known as the Revengers, who fight dirty and do not care about the rules, issued a challenge to the Masked Royal to see who was the strongest Trainer at the Battle Royal Dome. The Masked Royal accepted the challenge, inspiring Ash, his classmates, and Professor Burnet to go watch the match the next day. Unfortunately for Professor Kukui, they invited him to be in the audience with them, forcing him to sneak away with the excuse of going for shopping in order to change into his Masked Royal costume and reach the arena just in the nick of time.

When the Revengers once again started playing dirty, Ash's Torracat leaped down from the stands to stop them. The boss of the Revengers, Viren, then entered the stage, and challenged the Masked Royal and Ash to a tag match, with the Revengers Mad Magmar and Mr. Electric facing off against the two, threatening to buy out the dome should they lose to his men. The Masked Royal and Ash accepted the challenge, and Royal gave Ash a mask of his own, making him "Ash Royal". During the battle, where the Revengers continued to ignore the rules and play dirty, Ash's Torracat learned, using it to defeat both of the opposing Pokémon. Even when Viren tried to force his way, he was easily swept aside by the Double Royals. Before departing, Ash and Royal promised each other to face each other at the dome one day to settle the rivalry between Torracat and Incineroar.

In the anime, the Battle Royal Dome also supports Single Battles, in addition to Battle Royals.