When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Before we dive in fully, it's worth noting that the Halo series exists in what's called The ...

Colonel James Ackerson is a high-ranking member of the UNSC’s Office of Naval Intelligence (ONI). He’s also Dr. Catherine Elizabeth Halsey’s replacement as director of the Spartan-II program – so he’s ...