The predictability of the cycle of abuse in relationships and business interests: idealise, devalue, discard.
A history of mental breakdowns.
Boring and childish.
Victim mentality.
A entire harem of women (and a few men) who they keep sweet. A closet misogynist, however.
A slew of crazy exes. These accusations are in fact confessions.
Mimics others good qualities.
Alcohol/substance abuse.
Loud, arrogant, obnoxious.
Slimey glint in their eye, smug, uses reactive abuse to crazy make their exes.
Children by multiple women (they keep this one fairly quite).
A criminal record, possibly.
Long term instability in terms of finances and career, dramatic shifting and lack of genuine friendships, no permanent address/contact details, ruthless towards their children and exes.
A DP who is abusive, with similar characteristics.