Companions in Pillars of Eternity 2: Deadfire are covered on this page. Companions can join your party and aid you in combat. Upon recruitment you can choose a class or multiclass for a companion from the list of possible options. WARNING: this choice is permanent and cannot be reconsidered lately in the game. Some companions have their own unique subclass, abilities or equipment.
Also each companion has their own personality, temperament, preferences and personal quest. While being in your party companions will react on words you say to them or other NPCs and decisions you make. Each companion has a set of character traits - beliefs or demeanors they approve or disapprove. Drawing on this set they will develop relationships with you and other party members, and some of the relationships can even end with romance.