Companion:Mirri Elendis | Bastian Hallix
With Update 30, in mid June of 2021, ZOS added a new ESO Companion System. These are NPCs that will travel alongside the player and will be a companion that can tank, dps or heal.
The Companions can help any player defeat more difficult enemies and especially newer players have an opportunity to pick up bigger challenges, without having to ask others. Also, if the group is a player short, a companion can replace a group member. Meaning if they want to go into a 4-player dungeon and they are only 3 people, someone can summon their companion and the group will be full. They won’t be able to do complex mechanics, though, so they might not always be favored over other players.
It is also not possible to summon a companion while in combat, but perfectly able to unsummon them while in combat.
They will also not be able to be summoned in PvP instances, in single player arenas or in housing instances. Also, in instances where you can’t navigate to your character and talk to them, they will be briefly invisible, such as while swimming.
At this point in time you cannot romance a companion.
The player can also choose how often a companion reacts by going into Settings - Gameplay - Companion Reaction.
They can be revived with a soul gem or will recover on their own after combat, even though they will suffer from fatigue.