Damien Vesper was the founder of the organization, the Vespers. He was born in 1455. Damien was good friends with Gideon for some time but later betrayed Gideon for the Master Serum. When Gideon became paranoid and moved to Cahill Island, Damien was the only person he would let on the island besides the Cahills. He has only appeared in 'Vespers Rising' in the historical chapters 'Gideon Cahill' and 'Madelein Cahill'. His heirs are Damien Vesper II and Damien Vesper III, who became Vesper One.