Gladiator's Assault (GLAS) is the 25th Booster Pack released for the Yu-Gi-Oh! Trading Card Game, and the 6th of the OCG Series 5 Booster Packs. It includes 9 cards per Booster Pack in the TCG, with 30 packs per box. It is the joint-largest OCG Series 5 Booster Set, with 80 cards, and includes enhanced support for "Six Samurai", "Alien" and "Gemini" decks, introduced the "Gladiator Beast" Archetype, and features cards used by the Yu-Gi-Oh! GX characters Adrian Gecko and Jaden Yuki. It also delves into the anime's past, creating real-life counterparts for Yu-Gi-Oh! GX Season 2 cards like "Swing of Memories" and "No Entry!!". The TCG set also contains the most Secret Rares of any booster set to date. Like Tactical Evolution, this set includes 1 "Holographic Rare"/"Ghost Rare".