The dominant quality
temper, temperament, nature, sense, complex, mystique, mood, streak, attribute, trait, quality, singularity, badge, turn, tone, style, aspect, complexion, specialty, spirit, genius, humor, frame, grain, vein, atmosphere, ambience, climate, air, aura; see also attitude 2, characteristic, temperament.
The sum of a person's characteristics
personality, disposition, nature, makeup, temperament, constitution, reputation, repute, individuality, estimation, record, caliber, standing, type, shape, quality, habit, appearance; see also kind 2.
A symbol, especially in writing
letter, sign, figure, emblem; see letter 1, mark, number 2.
*An odd or striking person
personality, figure, personage, original, eccentric, oddity, crank*, nut*, case*, odd duck*, queer duck*, oddball*, weirdo*, crackpot*, flake*, kook*, freak*.
Moral strength
integrity, honor, probity, backbone; see determination 2, honesty 1.
A role
part, persona, member of the cast; see actor 1, cast 2, role.