Master Chief is the star of Halo 5, sorry Agent Locke - Polygon

In an interview with X-One magazine earlier this month, actor Mike Coulter — who plays Agent Jameson Locke in the Halo: Nightfall TV series and upcoming Halo 5: Guardians — stated that he will be

Halo 5 Play Arts Kai Figures: Master Chief and Spartan Locke - Previews World

Master Chief VS Locke in Bungie's Artstyle : r/halo

Halo 5: Guardians (2015)

I AM NOT LEAVING YOU HERE Halo spartan, Halo, Halo 5

Halo 4, Halo University Wiki

Halo 5 Play Arts Kai Master Chief & Locke Up for Order! - Halo Toy News

Halo 5 Main Protagonist is Master Chief, Not Agent Locke - IGN

The Halo Story So Far -- Catch Up Before Halo Infinite - GameSpot

The Most Intimidating Grunt that has Ever Lived : r/halo

Master Chief is still Halo 5's Main Protagonist

Halo 4, Halo University Wiki