The Harkness Test is a set of hypothetical guidelines used to determine if a fictional non-human entity—such as an alien, monster, or magical creature—can be considered an ethically valid romantic partner. Named after the famously omnisexual character Captain Jack Harkness from Doctor Who and Torchwood, the test was popularized in the late 2000s within internet fandom communities. To pass the test, a creature must meet three specific criteria: it must have human-level intelligence, the ability to communicate, and be of sexual maturity for its species. While it started as a way to discuss the ethics of sci-fi relationships, it has transformed into a viral meme template used to humorously evaluate everything from Pokémon to cryptids.