Bluebeard is a major character and antagonist from the popular comic series Fables and it's video game prequel The Wolf Among Us. Back in the Fairy Tales homeland Bluebeard was a seriel killer who would marry wealthy and well known women only to later brutally murder them by decapitation in order to inherit their fortunes. He, along with numerous other residents of the Homelands, fled after the entity known as The Adversary invaded and took complete control of their domain. Bluebeard now resides in Fabletown along with the rest of the displaced fairy tales, Fabletown being a magically protected portion of New York City. He supposedly changes his murderous way and used his vast fortune to become a very influential and political member of Fabletown though many of the residents hesitate to trust him, especially Fabletown's sheriff Bigby Wolf.
Bluebeard is also an old friend of Slade in between Legends of Light and Darkness and LOTM: Next Generation Island Tour.
It's unknown if Bluebeard joins Slade's team.