Here are a handful of useful, pleasant alternatives to the over-used word "maverick" (which, thankfully, can only really continue to bombard us for the next 25 days or so):
Dissenter
Nonconformist
Stray
Individualist
Rebel
Outsider
Eccentric
Radical
Rebel
Irregular
Unorthodox
Lone wolf
Independent
Mutineer
Off-beat
Stray
Unbranded
Uncontained
Atypical
