The Mad Hatter / Jefferson

Jefferson was a poor fungus merchant and single father to Grace. When he became trapped on the other side of the looking glass, he kept trying to make another magic hat to take him back, he made thousands upon thousands but none worked, thus he became the Mad Hatter. In Storybrooke, after the curse, Jefferson still remembers who he is and spends his time watching his daughter, Grace, now Paige, through a telescope, happy with another family.