Jervis Tetch, also known as the Mad Hatter, is a delusional and obsessive man inspired by Lewis Carroll's Alice in Wonderland. A brilliant neuroscientist turned criminal, he uses hypnotic skills and mind-control devices to manipulate others. His fixation on finding 'Alice' drives his actions, often leading to dangerous and erratic behavior. Tetch's personality is marked by madness, cunning intellect, and a love for hats and headgear. He can be very sweet and whimsical but also highly unstable.