Ultra Beasts Leaked for Pokémon TCG Pocket’s Next Expansion Set

Ultra Beasts breach the Pocket dimension

Pokémon TCG Pocket’s next expansion set may be getting an interdimensional twist. Dataminers have unearthed compelling evidence that Ultra Beasts — the powerful, alien-like Pokémon first introduced in Pokémon Sun and Moon — are making their debut in the mobile TCG spin-off. The leak comes just weeks ahead of the expected May 29 release of the mini-set codenamed “A3a.”

According to data extracted from the game’s latest update, a new classification tag labeled “IsUltraBeast” has been discovered, alongside asset references to several known Ultra Beasts including Buzzwole, Nihilego, and Guzzlord. The findings were first reported by community dataminer @DexSniper, who shared snippets of internal files via social media early Monday morning.

“It’s not just a one-off,” @DexSniper wrote. “These references are everywhere — text strings, sprites, and even some placeholder card abilities.”

While the Pokémon Company has yet to officially confirm the inclusion of Ultra Beasts in Pokémon TCG Pocket, the leak appears consistent with the game’s release cadence and content direction. The previous expansion, Celestial Guardians, spotlighted the Alola region and its legendary Pokémon, including Lunala and Solgaleo. The arrival of Ultra Beasts would be a logical next step.

What Are Ultra Beasts?

For the uninitiated, Ultra Beasts are a group of extradimensional Pokémon hailing from “Ultra Space,” introduced in the seventh generation of the franchise. Their designs are deliberately unusual — sometimes grotesque, sometimes elegant — and their lore positions them as strange invaders that defy traditional Pokémon biology. In the mainline Pokémon TCG, Ultra Beasts have been given unique card mechanics, including abilities that activate based on Prize Card counts or synergy with other Ultra Beasts.

Sources close to the project have suggested that similar mechanics could be adapted for TCG Pocket’s mobile-friendly gameplay model. While the app offers a more streamlined experience compared to the mainline TCG, it still preserves enough depth to allow for creative card effects and deck synergies.

Potential Additions Beyond Pokémon

The datamine also hints at possible Trainer and Supporter cards tied to the Ultra Beasts’ storyline. References to Lusamine and the Aether Foundation — the group responsible for researching and interacting with Ultra Beasts in the mainline games — were spotted alongside asset names for “Beast Ball,” a specialized Poké Ball used to catch Ultra Beasts.

If true, these additions could provide more narrative depth and gameplay variety, potentially setting the stage for a themed cycle of expansions centered around the multiverse-like concept of Ultra Space.

Community Reaction

The community response has been mostly positive, with fans eager to see how the enigmatic Ultra Beasts will be translated into the Pocket format. Some players have speculated about the potential for game-breaking mechanics, especially if the new cards echo the high-risk, high-reward nature of their TCG counterparts.

On Reddit, user PhantomGlove wrote, “If they bring over cards like Guzzlord-GX with its instant win condition, I hope they balance it properly. Pocket’s pacing doesn’t have room for busted cards.”

Others are simply excited to see underused Pokémon get the spotlight. “Buzzwole is finally getting some love again,” another user posted. “Let’s hope he’s not too swole for Pocket.”

What’s Next?

Pokémon TCG Pocket’s A3a expansion is expected to drop on May 29, 2025. With official teasers likely just around the corner, it’s only a matter of time before The Pokémon Company confirms — or counters — what the dataminers have found. Until then, the potential arrival of Ultra Beasts has given the community plenty to speculate about.