Before Baroque Works came calling, Daz Bones was a infamous assassin working in the West Blue. He was found by Crocodile, and was instated as the most powerful Officer Agent of Baroque Works. Although he gives the appearance of being cold hearted and detached, a hypnotic technique used by Miss Goldenweek revealed that his true dream was to be a super hero, ironic because of his former job.
Mr. 1 has eaten the Supa Supa no Mi, allowing him to turn any part of his body into steel blades. He has trained enough to have strengh many consider super human, and is unaffected by the heat of Impel Down.