Xyline-B163

Chief Warrant Officer Grade 3 Xyline Rhea, O'Hara is a SPARTAN-III Commando and a eagle eyed marskman for Beta Company. Though, she was not present on OPERATION TORPEDO Instead, she was present on a Wolf Operation along with SPARTAN-B402 on the completely abandoned but controlled Covenant Planet Arcadia. Where it was her first but a hard operation for her. She's also the cousin of SPARTAN-B402.
Xyline's performance battle scores on the SPARTAN-III Training were average. But when it comes to Recon and Sniping from long range, that was the only simulation training she has the scores that's high enough for her to be part of Beta Company. She was presumed late on the Operation that was deadly that killed 298 SPRATAN-III Commands on Beta Company but she was called in to an operation along with B-402.
==Battle of Noa==
Wolf Six, along with Xyline-B163. Was sent into Noa to hold out in 3 days, but she was assigned to be inside the pelican since she was just a fresh off SPARTAN from training. But once after 3 days, she saved the battered SPARTAN-B402 from Rtas'Vetrum and the Zealots by using an RPG. Escaping in the planet along with him and Hesh-352.
==Fall of Kobol==
Main Article:Fall of Kobol
On March 1,2552, Wolf Six deploys in to Kobol. Xyline and B402 were present on their counter-insurgency operation. But the operation changes when the Covenant vessel was spotted above on an ONI Site. The Two were deployed immediately and successfully defended the site with B402s clear aim of the laser target to tag and send in the big guns ordinance. Her and B402 were later, deployed in multiple operations.