My first retainer is a Miqo'te named Y'tama. (Y because that's the same clan as my character himself, and the Tama part is named after my cat.)

After that, I decided to have my characters hire each other, so started making retainers matching the appearance of my other alts, so Y'kayah has a retainer who looks just like my alt Navarre and is named Navakun. (Taking a "-kun" suffix onto the first syllable or two of a guy's name is apparently a common way of forming nicknames in Japanese.)

Navarre in turn has a retainer who looks just like Y'kayah and is named Kayah. ("Kayah" being the personal name portion of the full name "Y'kayah Tia", of which the "Y" part identifies a Seeker clan and the "Tia" part a position within that clan.)