Four soldiers. Four starting points.

Lucas, Mags, Marcus and Dom standing together in the official Bravo Squad image
Bravo Squad, from left: Lucas Reyes, Mags Carter, Marcus Fenix and Dominic Santiago. All four are available from the start of campaign co-op.[1]
The playable campaign squad[1][3]
CharacterBefore the invasionVoice actor
Marcus FenixA veteran mourning his best friend Carlos.John DiMaggio
Dominic SantiagoCarlos's younger brother; already knows Marcus.Carlos Ferro
Mags CarterAn experienced former Gear working at Kalona's refinery.Elizabeth Ludlow
Lucas ReyesA communications cadet without front-line experience.Jake Ryan Lozano

The people around Bravo

Carlos Santiago connects Marcus and Dom through their shared loss. Tai Kaliso brings a returning defender and the Lancer's origin into the story. Mako Kemara is the new soldier holding a grocery store with a Vulcan.[1][3]

For the enemy commander, read Vraahk. For choosing who your friends can play, use Campaign & Co-op.[1][4]

Inspect the new character-card profiles for Manu Kemara and Shin Morida. Each includes the actual in-game biography screen and a route back to its unlock card.

Compare the aircrew profiles for Gill Gettner and Daan Riggs; continue to Elias Trench and Akila Grey for the City Hall briefing and their recorded background cards.

Three faces beyond Bravo

Continue to Commander Zee for an encounter portrait, service timeline and optional family reveal.

Sources for this overview
  1. Rebuilding Brotherhood
  2. E-Day campaign hands-on
  3. Gameplay reveal deep dive — Official Xbox Podcast
  4. E-Day Campaign: Brotherhood and Hope in a Hopeless World — developer transcript
  5. Recorded campaign character cards