Samaritan
acolyte
adjutant
agent
aid
aide
aide-de-camp
aider
ancilla
assistant
assister
associate
attendant
auxiliary
backer
befriender
benefactor
benefactress
benefiter
best man
coadjutant
coadjutor
coadjutress
coadjutrix
deputy
employee
executive officer
follower
good Samaritan
good person
help
helping hand
helpmate
helpmeet
inferior
jack-at-a-pinch
junior
laborer
lieutenant
ministering angel
ministrant
paranymph
paraprofessional
patron
right-hand man
second
secondary
servant
sideman
striker
adviser
ally
comrade
confidant
counsellor
counselor
disciple
gardener
guardian
guide
healer
interpreter
laborers
mentor
physician
protector
secretary
supporter