Amazon MGM Studios' Blair Fetter Restructures Genre Team; Key Executives Matthew King & Adrienne O'Riain Exit

A significant leadership shakeup is underway within Amazon MGM Studios' genre division. Just two months after his arrival from Netflix, Head of Worldbuilding & Genre Series Blair Fetter has restructured his team, leading to the high-profile exits of executives Matthew King and Adrienne O’Riain. This move signals a swift and decisive effort by Fetter to reshape the creative leadership overseeing Amazon's ambitious fantasy, sci-fi, and genre series slate.

The restructuring involves more than just departures. Tom Lieber, a key figure within the division, has seen his responsibilities expand significantly. The reporting lines for other remaining team members have also been altered, indicating a comprehensive reorganization of the department's hierarchy and workflow. Fetter's rapid actions suggest a clear mandate to implement his own vision and operational structure for worldbuilding at the studio.

The exits of King and O’Riain, both established executives, create immediate openings and potential instability within a critical content pipeline for Amazon. This restructuring places pressure on the remaining team, including Lieber, to deliver on high-stakes projects while adapting to new leadership. The changes reflect the intense competitive pressures in the streaming landscape, where platforms are aggressively realigning their creative teams to secure the next major franchise hit.