There are three types of companions:
-Story: Jack-of all-trades and more customizable; better for different situations and longer quests and missions.
-Unlockable through quests: More specialized but limited in customization; great for efficiency for specific quests and tasks.
-Mercenaries: Time limited; They are party extensions beyond your standard four member party, enabling you to have more manpower in your party. When time runs out, you pay more if you want more time with them. Prices would increase the more you ask for more tim