Henry Fuseli RA (German: Johann Heinrich Füssli; 7 February 1741 - 17 April 1825) was a Swiss painter, draughtsman and writer on art who spent much of his life in Britain. Many of his works, such as The Nightmare, deal with supernatural subject-matter. He painted works for John Boydell's Shakespeare Gallery, and created his own "Milton Gallery". He held the posts of Professor of Painting and Keeper at the Royal Academy. His style had a considerable influence on many younger British artists, including William Blake.
Thor Battering the Midgard Serpent, was Fuseli's diploma work for the Royal Academy, accepted 1790.
Fuseli was born in Zürich, Switzerland, the second of 18 children. His father was Johann Caspar Füssli, a painter of portraits and landscapes, and author of Lives of the Helvetic Painters. He intended Henry for the church, and sent him to the Caroline college of Zurich, where he received an excellent classical education. One of his schoolmates there was Johann Kaspar Lavater, with whom he became close friends.