Minecraft Name Generator

A Minecraft username has hard limits: 3 to 16 characters, letters, numbers and underscores only, no spaces, and it must be unique across every Java account on the planet. That is why the names players actually use are compounds (EnderWolf, PixelMiner, ObsidianKing), compounds with a trailing number or underscore when the plain version is taken (CreeperSlayer99, EnderWolf_), or short made-up words that are easy to type in chat. Bedrock gamertags are more forgiving, but short names are still better because they are what everyone sees floating above your head.

The best source material is the game itself. Mobs (Warden, Allay, Piglin, Ghast), blocks and ores (Netherite, Deepslate, Amethyst, Prismarine), enchantments (Mending, Riptide, Silk Touch), advancements (How Did We Get Here, When Pigs Fly) and community slang (clutch, speedbridge, lifesteal, UHC) all read instantly as Minecraft to other players without being generic gaming names.

Name tags are a separate job. Anvils let you rename a name tag with spaces and punctuation, and the name then hangs over your wolf, cat, horse or captured creeper forever. Those names work best short and characterful, like Sir Clucks or Biscuit the Wolf, because they need to be readable from across a base.