I'd say ExTP 3w2 So/Sp, 5 or 7 head-fix, 9 or 8 gut fix. I would say core-8, but an 8 that lacks empathy would be more psychopathic. Enneagram 3 pretty much reads like the mainstream pop culture definition of a 'sociopath', both supposedly wear masks and 'charm' people to get what they want.
Some of the real examples I've seen have been ENTJ 8w7, ENTP 7w6, and ESTP 7w8 (Ted Bundy is often typed as ExTP so/sp 8w7).
To derive a prototype, a typical sociopath would be an extraverted logical type ExTx usually 3, 7, or 8 in the enneagram with various wings, social or sexual first in stacking, who is determined to obtain power, self-promotion, and/or experiences and entertainment (at other people's expense).
Among introverted logical types "gone wrong" the predominant trait is sadism, extreme emotional callousness, rather than sociopathy.
mbti: ENTJ, ESTP
enneagram: Naranjo correlates antisocial personality disorder with 8. it's probably pretty common in 7w8 and 3w2 as well (and, to a lesser extent, 5, 6 and 3w4)
Instinctual Variant: Sx/So, So/Sp (less ideal specimens of both tend to be influential, manipulative and good at playing the political game to get what they want)
socionics: ESTp, ENFj
ENFP: We put the Fi in Fire
Motivation: Dark Worker
Alignment: Chaotic Neutral
MTG Color: black/red
Male Archtype: King/Lover
"You are a gay version of Gambit" Speed Gavroche
"I wish that I could be affected by any hate, but I can't, cuz I just get affected by the bank" Chamillionaire
Not sure what mincing means, but Ni dominants are known for being spineless cowards. Sucker punch bitches.
2. walk with an affected delicacy or fastidiousness, typically with short quick steps.
"there were plenty of secretaries mincing about"
synonyms: walk affectedly;
informal: sashay, flounce, strut
"she minced out of the room"
affected, dainty, pretentious, dandified, foppish;
"no one dared to laugh at the young master's mincing walk"
Your representative owes you, not his industry only, but his judgment; and he betrays, instead of serving you, if he sacrifices it to your opinion.
- Edmund Burke