| ExpandGuard Duty Characters | |
|---|---|
| Guards | Geff Rodrigo • Sarah Daws • Nicole Vega • June Vega • Mitchell Miller |
| HQ | Ignacio Dominguez • Randy DeLuca • Louie Vargas • Alana Reynolds • Unit B • Unit P • Protocol Robots (Blue • Green • Pink • Red • Yellow) |
| UNSC | Valentine • Brigadier |
| SAFE Guards | Jack O'Brien • Frank Collins • Diego Jones • Linda Kelen |
| Trinity | Molotov • Cocktail |
| The Damned | Corvus • Riel • Kazi • Fazeka |
| Other | The Spartan • Prim |
| Non-Canon | Rico Suave • Dino Jones • Percy O'Hara • O'Brien II • Kelen II • Collins II • Jones II • Trinity Woman |