Nillson was born in Gävle, Sweden in 1963 and moved to Minneapolis, MN with his parents in 1973. He majored in art at university and became employed as a printer's assistant. During that time he illustrated at least three children's books. He is also accredited with the creation of Godman, an abortive multi-media marketing blitz planned for the mid-nineties.
Much of his work is now lost, perishing in the same fire which killed Nillson and his wife.