When Wolverine was training in Japan he met a woman named Itsu, whom he married and conceived a child with. The Winter Soldier kills the pregnant Itsu under orders of Romulus, a mysterious character who has been hounding Wolverine for the majority of his life.
Unbeknownst to Wolverine, the unborn child
Itsu is carrying manages to survive due to the healing factor he inherited from his father. Taken in by Romulus and trained to be a killer, the child, now known as Daken, becomes a member of both the Dark Avengers and Dark X-Men, hell bent on exacting his revenge on his father.
In addition to spring loaded claws and a healing factor like his Dad, Daken also has the ability to produce pheromones that can manipulate any individual’s emotions, including those of love and attraction. Daken is often shown taking full advantage of this ability, seducing both men and women in order to get what he wants.