Caleb Dumas was a member of the prominent Dumas family.
During an Easter party at Wayne Manor, Caleb along with Celestine Wayne went missing, and were later found in an illicit embrace by Wayne men. Though Caleb insisted to everyone that they were in love, Celestine denied it, swearing on her mother's grave that Caleb had forced himself on her. A large part of his arm was soon after cut off by Jonathan Wayne as punishment. Caleb later went into exile over seas, to a religious sect founded by his family's patron saint.