Seig Darklighter's story tells of a Jedi character, frequently misidentified as the leader of the Jedi Rebellion, when in actuality Luke Skywalker held that command.
Alternatively, another narrative depicts Darklighter as a Padawan who uncovers the secrets of the Bogan and proceeds to instruct a band of pirates, known as the Sith, in the ways of the dark side, thereby establishing the Black Knights of the Sith.
Ultimately, the Darklighter name was merged with Biggs, the name given to both a prince and Leia's brother in one version of the story (and Luke's brother in an earlier version), resulting in the creation of Biggs Darklighter, a character distinct from the Jedi Order.