(I'm sorry Fire, I forgot!)
Matrix is a Jedi Knight of the Republic like the rest of you. He is returning to Coruscant after a well-done mission. He was in the company of Manu-Ki-Tora when the ship was attacked. He was forced into his cabin by the pirates, which then locked. He is currently still in his quarters.
(You can play now Fire! Sorry 'bout the delay 🙂 )
When you, Arleth and Keirra, enter the engine room, you smell a little smoke, combined with oil, burnt flesh, and grease. A crewmember sits against a control panel, grabbing his left arm. A beheaded crewmember sits next to him. The crewmember with the injured arm points up to a walkway and says "He went up there!", then faints.