What happens when you make a character and then neglect him...
About this creation
Fell Skyhawk's son turned sith. Inside joke being that because I neglected the poor character in all my writings the poor kid turned sith.
In universe, however, he saved his father's life using the dark side. Fearing his father punishing him for using the dark side Jango ran. He ran into some Sith wanabe group who turned him into a sith. He however, became more of a true sith and ended up bringing those who turned him further into the dark.
Fell, who had been believed killed in an explosion, went with his daughter to find Jango. Eventually they did and stayed on the planet he was on to rescue him from himself. Fell infiltrated the Sith organization, having his daughter stay on the outside to help when they needed to escape.
Jaina, believing Fell and her children dead, once came upon the planet, and was saved by Jaden. Jaina, still thinking her children dead, did not realize who Jaden was. Jaden, being under orders from her father that until they recovered Jango not to let Jaina know they were alive revealed nothing. The reason being that it would be better for Jaina to believe her son dead then know he turned to the dark side.
Eventually Fell did retrieve his son, and returned to Jaina.