The 'Ash Ketchum's Age' meme refers to the long-standing joke within the Pokémon fandom regarding the protagonist's lack of aging despite the anime running for over two decades. Since the show premiered in 1997, Ash has traveled across multiple regions, participated in numerous championships, and seen years of in-universe history pass, yet official sources consistently maintain he is still 10 years old. This chronological impossibility has spawned countless memes highlighting 'Pokémon Logic,' often comparing Ash’s unchanging appearance to real-world time or characters from other series who actually age. It is a staple of internet culture used to mock narrative continuity errors or the sheer longevity of the Pokémon franchise.