Deviant: someone who deviates.
de·vi·ate
verb: deviate; 3rd person present: deviates; past tense: deviated; past participle: deviated; gerund or present participle: deviating
?d?v???t/ depart from an established course.
“you must not deviate from the agreed route”
synonyms: diverge from, digress from, drift from, stray from, veer from, swerve from; More

Positive deviant is a technical term for someone who does things differently from others and produces drastically better results.

Most positive deviants go deep within for the deviant knowledge, and are rather unconscious about the fact that they are special, that they have a secret knowledge others are not privy to.
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