Insanity Manipulation (self) – The ability to use one’s own insanity as an asset.
R.D. Laing suggested that madness can be a breakthrough rather than a breakdown.
I am quite sure that the Joker (DC) would agree with R.D. Laing.
A psychiatrist suggests that the Joker may have super sanity Arkham Asylum-A-Serious House on Serious Earth HC (1989).
Shade, The Changing Girl (DC) has madness described as a power in her description issue in #1.
Brainiac 5 (DC) goes insane inexplicably in Superboy and the Legion of Super-Heroes V1 #250.
Maximus the Mad (Marvel) shows that there is a thing line between genius and madness in Fantastic Four V1 #54.
Crazy Jane (DC) has multiple personalities with different powers in Who’s Who in the DC Universe #6.
Legion (Marvel) has multiple personalities and multiple personalities means multiple powers in Official Handbook of the Marvel Universe V2 #7.
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