protagonist (n.)
- abettor
- actor
- admirer
- advocate
- aficionado
- angel
- antagonist
- antihero
- apologist
- backer
- bit
- buff
- cast
- champion
- character
- cue
- defender
- dependence
- diva
- endorser
- exponent
- fan
- feeder
- headliner
- heavy
- hero
- heroine
- ingenue
- lead
- leader
- lover
- mainstay
- maintainer
- part
- partisan
- patron
- person
- personage
- piece
- principal
- promoter
- reliance
- role
- second
- seconder
- sectary
- side
- sider
- singer
- soubrette
- sponsor
- stalwart
- standard-bearer
- standby
- star
- superstar
- support
- supporter
- sustainer
- sympathizer
- upholder
- villain
- votary
- walk-on
- well-wisher
