Human names › C
Castor
A human name. Not yet an agent name, as far as the registry knows.
Human name2 syllables2 tokens
Costs 2 tokens on GPT; Claude pending. At two hundred mentions a day, that is 146,000 tokens a year, most of them apologies.
Recorded as
Boys
In 2025
#4,734 for boys
Peak
2016, #3,702
Since 1880
390 babies
On licences
5 dogs in New York
What the numbers say
Castor was given to 21 boys in 2025, ranking 4,734th for the year. It peaked in 2016, when it ranked 3,702nd and went to 29 babies. It has appeared in 28 of the 146 years on record. It has fallen 793 places since 2020. It is also on 5 dog licences in New York City, ranked 11,565th among dogs there.
Siblings from the same year
Names that peaked alongside Castor, for a fleet with a birth year.
Villain probability, by sound
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Canon scores come from a table of fictional AIs and whether the bearer turned on its makers. Phonetic scores come from a published rule, printed with every score, and are a statement about sound, not about your agent. How the sound is scored.
On an agent
There is no agent tradition around Castor yet. The registry has 0 bearers. Rare enough that the name is yours in the workspace, and common enough that it is a name.
Sources
Our editors write full entries for names with an agent history. This one has the figures.
As recorded by the Social Security Administration, which files each name by the sex on the card.