Strauss D. Calam, also known as "Lock-Haired Calam" and commonly known as "Lock-Haired", is an up-and-coming pirate rookie. He is the founder and captain of the Lock-Haired Pirates. His dream is to become the world's most powerful pirate so he can return to his home country Alkebulan and liberate it from the false royals, in the process saving his family.
Born in Alkebulan, Calam is the son of the countries best and most-well known scientist Strauss D. Marcus, and he is one of the few people of the world that carry the Will of D.
Calam has most recently gone up against the crooked Marine Captain Gruel Randall, defeating him and his commander Red Julius with the help his first-mate Chou Soran.