The 'Batman, I Caught a Little Pokémon' meme stems from a viral parody video where the Joker reveals he has captured a Lopunny, leading to a dark and humorous exchange with Batman about the legalities of Pokémon. The meme parodies the Joker's chaotic nature and the internet's obsession with certain Pokémon designs, specifically leaning into 'cursed' humor. It gained massive popularity on YouTube and TikTok through voice acting that mimicked the iconic Mark Hamill and Kevin Conroy styles. It is typically used to illustrate situations where someone is about to do something morally questionable but technically legal, or simply to highlight absurdist, dark humor in the gaming community.