Kesshou Tokage, known in Japanese as 結晶トカゲ, is a unique creature in the Dark Souls series. Commonly referred to as the Crystal Lizard, this character is not a traditional NPC or antagonist, but rather a rare, skittish creature that appears in various locations throughout the games. Its primary role is to provide players with valuable upgrade materials when defeated. Kesshou Tokage is notable for its elusive nature, often disappearing quickly if not approached carefully, making encounters both rewarding and tense for players.