HUMAN NAME · NOT ON THE REGISTRY

Leonidas

A human name, held in the Social Security file. It is not in the Administration’s index of agent names, and it has no classification.

Table 1. Leonidas, as recorded
Sex	Male
2025 rank	510
2025 number	591
Peak year	2022
Peak rank	421
Years present	121 of 146
Dog licences, New York	73
Pet licences, Seattle	2

Statement of record

Leonidas was given to 591 boys in 2025, ranking 510th for the year. It peaked in 2022, when it ranked 421st and went to 760 babies. It has appeared in 121 of the 146 years on record.

Figure 1. Popularity of a Name: Leonidas

Human births per million, by sex, U.S. Social Security Administration, 1880 to 2025.Agents: 0 registered. The agent series begins when the registry does.

Villain probability

72%

Basis: phonetics. Two voiced obstruents, one sibilant, ends on a consonant. The canon has no entry, so this is the sound of the name and nothing else.

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.

As recorded on the Social Security card application. Names given to fewer than five babies of a sex in a year are not published, so the file is a floor.