Casper

Casper is an English variant of Caspar or Gaspar, from Old Persian Ganzabara, meaning "treasurer" or "keeper of treasure." It is traditionally one of the names attributed to the Three Wise Men who visited the infant Jesus, though these names do not appear in the biblical text itself. As a pet name, Casper carries both its ancient roots and its modern ghostly association, the latter entirely friendly.

Casper ranks #182 among America's most popular pet names, and the connection to Casper the Friendly Ghost — the beloved Harvey Comics character who has appeared in cartoons and films since the 1940s — is the dominant cultural reference for most owners who choose it. It suits white or very pale companions particularly well, where the ghost association becomes a gentle, affectionate joke. But beyond the ghostly charm, Casper is genuinely warm: a friendly, approachable name for a companion who moves through life with an easy, welcoming spirit.