handyman
jack of all trades
sciolist
retainer
servant
bosom-friend
butler
chamberlain
chambermaid
chauffeur
coachman
coachmen
coadjutor
confessor
confidant
confidante
counsellor
equerry
footman
henchman
housekeeper
informant
lackey
laquais
major-domo
pantler
playmate
serving-man
understudy
valet