companion, escort
Comment tu trouves ton accompagnateur ?
What do you think of your guide?
— Benni (2019)
Je l'ignore, je suis son accompagnateur.
I don't know; I'm accompanying him.
Voici M. Heller, l'accompagnateur de Benni.
This is Mr. Heller, Benni’s companion.
Non, je suis ton accompagnateur scolaire.
No, I am your academic mentor.