Fallout 4 Companions

Permanent companions
The game has 13 companions, including:

Personal Quests Some companions have personal quests, usually given after reaching a certain amount of approval:

Cait: Benign Intervention

Curie: Emergent Behavior

Robert MacCready: Long Road Ahead

Nick Valentine: Long Time Coming

Temporary companions
The game has a number of temporary companions that will only be available during certain missions.