Participant or Spectator
Participate (pär-tĭs′ə-pāt) ~ To be active or involved in something; take part. Spectator (spĕk′tā″tər) ~ One who looks on; an onlooker or eyewitness; a beholder; especially, one of a company present at a spectacle of any kind. Fanatic (fə-năt′ĭk) ~…