A person opposed to a concept or principle.
A fan who objects to a particular creator, franchise, fandom, character, ship, etc., especially on moral or sociopolitical grounds.
That has a torsion angle between 90° and 180°
Opposed to something.
One who believes dogmatically in something regardless of evidence or even conclusive proof that the thing is false or was staged; one who has true-believer syndrome.
Used other than figuratively or idiomatically: see true, believer.
A strict follower of a doctrine.