Ax Crazy: Constantly on the verge of a nervous breakdown, manic and crazy-eyed, plagued by paranoid delusions about his parents not loving him. And deals with all of them by starting wars and commiting genocide, which he sincerely thought would make his parents proud (from his point of view, it was a pre-emptive act of self-defence).
The Mentally Disturbed: He seems to suffer from chronic depression, paranoia (as far as his parents are concerned, thinking they never loved him) and is deeply insecure.
-TVTropes.org