Pollux

Made cool by that final X (as seen in Felix, Lennox, and Rex), Pollux is the Romanized form of Polydeukes, the half-twin of Castor, and the son of Zeus and Leda. Associated with the Gemini constellation, the name means "very sweet".

While Castor is held back by the oil, parents may be put off Pollux by its similarity to words like pollock, polyps, pollution, and pox — and with its almost rhyme, beginning with B.

If you can look past that, as a handful of parents in the US have been doing since at least 2008, it could make an unexpected way to honor a Paul or a Polly and a way to nicknames Lux and Lockie.

Pronounced POL-uks.

As of October 2026, Pollux ranked #13410 in US births in 2025 SSA, peaked at #10346 in 2015.