Legends Awakened's name is based on legendary Pokémon Heatran and Regigigas, who feature in the set and its theme decks, and also references the latter's necessary awakening in the Snowpoint Temple. It is also the first set since Secret Wonders to contain an entire Japanese set, with the two sets in-between, Great Encounters and Majestic Dawn, both containing parts of Moonlit Pursuit/Dawn Dash. Because of the increased number of English sets, Legends Awakened brings the number of English sets back in line with the number of Japanese sets.
Until the release of Supreme Victors, Legends Awakened, with its 146 cards, was the largest set since Skyridge, which to this day remains the second-largest set in the history of the Pokémon TCG, behind only Aquapolis. Overall, Legends Awakened is tied for seventh-largest English-language set in the history of the TCG with XY, behind Supreme Victors, Boundaries Crossed, Primal Clash and the three e-Card sets.