Halo: Escalation — Dark Horse Comics
Issue: #11
“Exposure” part 1—Spartans Ray and Thorne set out on a secret mission to uncover the origin of a monstrous new bioweapon . . . but is it too late to prevent total catastrophe? Halo lead writer Brian Reed (Amazing Spider-Man, Ms. Marvel), Duffy Boudreau (BlackAcre), and Ricardo Sánchez (Green Arrow) team up to present one of the most dangerous Spartan ops yet!An essential addition to the Halo canon...
First appearances: Ayit 'Sevi
Creators: Michael Atiyeh, Duffy Boudreau, Anthony Palumbo, Ricardo Sanchez, Rob Lean
Characters: Roland, Admiral Osman, Ayit 'Sevi, Spartan Ray, Gabriel Thorne, Sarah Palmer, Captain Lasky
Story arcs: Exposure