Companions in Mass Effect 2 are special NPCs that can be recruited to join the player's party. Companions fight alongside Commander Shepard, and have their unique set of stats, abilities, equipment, lore and even their own specific missions, some of them are required by potencial Companions to join the team, and all Companions have a Loyalty Mission each. Companions can agree or disagree with Commander Shepard, they can also die permanently.
All Mass Effect 2 Companions Guide
The following Companions join the squad at the beginning of Mass Effect 2 as part of the story.
Available after Freedom's Progress
The following Companions join the squad after completing their Dossiers. Their Dossiers become available after completing the Freedom's Progress Mission.
Available after Horizon's Mission
The following Companions join the squad after completing their Dossiers. Their Dossiers become available after completing Horizon.
Unlocked by taking specific decisions
The following Companions require specific decisions during missions from Shepard to be unlocked and join the squad.
The following Companions are included as part of different DLC.
Does ME2 have the best companions in the series?