Sabian

 is a former crewmate of Fjord.

Background
Sabien was the one responsible for sabotaging ship Fjord worked on. Fjord walked in on Sabien lighting a fuse, but before he could react Sabien wounded him with throwing daggers, ran to the deck of the ship and jumped into the ocean. After surviving the explosion Fjord returned to one of his contacts and learned that Sabien had also survived.

According to Captain Adella, Sabian was working with a shady merchant named Cadmus Leeland. Leeland's ship is named the Widow's Embrace.