follower

adherent admirer advocate backer believer client devotee disciple fan member participant patron supporter worshiper

addict apostle attendant bootlicker buff cohort companion convert copycat fancier freak hanger-on helper imitator lackey minion parasite partisan promoter proselyte pupil representative satellite sectary servant sidekick stooge sycophant toady vassal votary zealot

habitué protégé

adversary antagonist enemy manager opponent opposition owner

leader