Dark Fusion was a Victory-II-class Star Destroyer that served as the flagship of the third and last surviving faction of the True Brotherhood. The vessel was led by by the Force witch Anaxela and the shade of Severina following the destruction of the other two factions on Kangaras and Mustafar in 24 ABY.
The Dark Fusion was part of the True Brotherhood strike force that invaded the Orian system in 27 ABY shortly after the Dark Brotherhood's defeat at Antei during the Yuuzhan Vong incursion. The ship was eventually captured and commandeered by Elders of Clan Naga Sadow. The ship was renamed VSDII Orian Legacy.
The fate of the Dark Fusion was be decided during the Invasion of Orian competition.