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Mad Hatter

Jervis Tetch

Gotham (2014-2019 TV Series)

Mad Hatter's powers and abilities

Hypnotism, Brain Washing, Mind Control, Marksmanship, great Tactician

Mad Hatter's weaknesses

Noise-canceling items: So long as someone is wearing something over their ears, such as headphones with music being played through them, Jervis cannot control them using his voice.

Mouth cover: Jervis cannot use his hypnotic voice on anyone if something is placed over his mouth.

Insane Individuals: It is shown Jervis cannot hypnotize those who are unhinged as Jerome Valeska was shown immune to his hypnotism.