Crimson or water sprite
In Germanic mythology, a Nix is a shapeshifting water spirit. As a surname-turned-given-name, it can also derive from the Middle English 'nix', a variant of 'nick', meaning crimson or a notch. It is currently used as a short, punchy modern choice.
Less common today
Nix isn't in the latest US Top 1000. It last peaked at #5,650 in 2023.
A character in the film Tomorrowland Β· Tomorrowland
A character in the video game Infamous 2 Β· Infamous 2
US births per 5-year period, 1990βpresent (SSA data).