Poker Knight is a series of LIGHT-Attribute, Warrior-Type monsters that were used by Yugi Muto and Roku in the anime.
There are four members released in the TCG/OCG: "King's Knight", "Queen's Knight", "Jack's Knight" and a Fusion Monster, "Arcana Knight Joker". There is also an anime-only card, "Royal Straight Slasher".
- In the manga, "Queen's Knight", "King's Knight", and "Jack's Knight" were referred to as the "The Three Musketeers Of Face Cards".
- "Queen", "King", and "Jack's Knight" were also known as The Three Swordsmen possessing the maximum speed summon ability.