Optimus is Latin for "best" or "excellent," from *optimum,* later used as a modern stylistic personal name meaning superior.
Optimus is Latin for best or excellent, from optimum, and that meaning is almost impossible to miss. It is a name that announces superiority directly, which is part of its boldness.
In older Latin usage and later stylistic adoption, the word carried clear praise, and as a given name it retains that unmistakable sense of high quality. As a personal name, Optimus feels grand, literary, and unmistakably self-conscious. It has a strong, almost imperial sound, the kind of name that invites either admiration or irony depending on context.
That tension is what makes it memorable. Optimus is rare because it is so declarative, but its meaning gives it a force few names can match.