Insanity/Madness but charismatic/charming

The word I am looking for is an abstract noun preferably one that is also a \[transitive or intransitive\] verb.

I am looking for a word that means any of the following:

1. insane, insanity, madness, delirium, or otherwise mentally unwell; but implies at least a touch of charm or charisma. 2. insane, insanity, madness, delirium, or otherwise mentally unwell; and under the charms/sway/persuasion of another 3. A word for a person who is charming or charismatic but drives others: insane, mad, or otherwise mentally unwell.

If for the third, I am **not** looking for a psychological condition that would give an excuse to make someone act like that. It's for a story, the character it is related to is not a narcist nor does he have either version of "Antisocial personality disorder."

**The following section provides context, but can be skipped if it's too much to read.***The context gets into details outside this subreddit's scope, so some people might lose interest.*

The character uses eroding his enemies' sanity as a weapon. He is a charismatic vampire who also uses magic to erode the sanity of others (in addition to using magic to command them). He needs a title, "Knight of \[word\]," that describes him, what he does, and what he brings on others. The word should have a gothic feel preferably.