Sig Raan (Earth-5875)

"I admit my work has been hampered by the ignorance of the san'shyuum, always foisting their "holy writ" on us, but the arrangement has been quite lucrative for me."

- - Sig Raan to Decimus

Sig Raan was a t'vaoan kig-yar scientist of the Covenant, who researched the development of bioweapons during the First Contact War at a facility on Otraak.

Biography
"There's a great scientist here—a kig-yar. And you can always count on one of their kind to know what side to be on."

- - Decimus to Atriox

Sig Raan was a member of the Covenant, where she developed numerous bioweapons meant to be used against human soldiers and heretics during the First Contact War, fighting alongside the jiralhanae. In October 2nd, 2551, as the war neared its end, Raan was visited by Decimus, now a member of the dissident group known as the Banished, led by Atriox. Residing at a secret research facility on the colony Otraak, she was protected by numerous kig-yar and unggoy bodyguards. Despite her atheism and lack of belief on both the Path and the Covenant as an institution, she enjoyed the successful career and resources she acquired during the years, even if that meant having numerous restrictions duo to the Writ of Union imposed by the Hierarchs.

With the never-ending growth of the Banished, Decimus attempted to recruit Sig Raan to join their cause, after being attacked by a series of unggoy guards. As she allowed Decimus and his jiralhanae to enter her facility, he witnessed her newest creation, a device which was able to mimic the specific frequencies emanated from a yanme'e Queen that allowed her to control hundreds of yanme'e Drones. As one of the yanme'e to carry her, she betrayed Decimus, and shut down all the communications from the facility in order to stop Decimus from contacting the ships that sent them to the colony. At the same moment, all of her yanme'e and loyal kig-yar and unggoy soldiers turned against the jiralhanae, deeming them traitors against the Covenant. Decimus fought as many of his warriors died, until Atriox appeared and, having predicted her betrayal, aided his surviving soldiers and killed all of her own. When she attempted to escape, Decimus killed the yanme'e who carried her, and the t'vaoan scientist fell to her death.

After Sig Raan died, Decimus showed interest in using her device as a means to control new yanme'e to join the Banished, but Atriox destroyed it, saying that those who joined the Banished would do so willingly and not by force as the Covenant did.