The Pokémon Inferno X Booster Box is a Japanese-language Pokémon TCG booster box from the Mega Evolution era. Inferno X is a Japanese expansion with a strong Fire-themed identity and prominently features Mega Charizard X ex. The set combines the return of Mega Evolution with modern Pokémon TCG card designs, bringing together Pokémon, Trainer cards and a variety of collectible rarities.

Each Inferno X Booster Box contains 30 Japanese booster packs, with 5 Pokémon cards included in every booster pack. A complete booster box therefore contains 150 cards distributed across the 30 individual packs. This follows the familiar format used for regular Japanese Pokémon TCG expansions, offering more individual packs with fewer cards per pack compared with most English-language booster boxes.

Inferno X features Mega Charizard X ex as one of the defining Pokémon of the expansion, giving the set a recognizable connection to one of the most popular Mega Evolutions. Alongside Mega Evolution Pokémon ex, the expansion includes regular Pokémon and a selection of special artwork and higher-rarity cards. The combination of fiery artwork, Mega Evolution and modern card treatments gives Inferno X its own visual identity.

All cards inside the Inferno X Booster Box are printed in Japanese. With 30 booster packs and 5 cards per pack, the box contains a total of 150 randomly inserted Pokémon cards. Specific individual cards are not guaranteed, as the contents of each booster pack vary. Inferno X combines Japanese Pokémon cards, Mega Evolution and the strong presence of Mega Charizard X within one sealed booster box.