Their attire is similar in style to that of Syndicate Operatives, though with a more "clinical" feel and they wield Tenno weaponry such as the Latron or Zylok as well as a lamp containing Arlo's Flame.
Whenever a player is downed, there is a chance of a Devotee spawning into the mission and reviving the player. Upon achieving their duty, they'll remain in the mission and follow the downed player, providing fire-support similar to Specters or Rescue Hostages, until they are either killed or despawn on their own after a few minutes.
While active they will prioritize reviving the player and their allies while also granting an effect similar to an Ancient Healer's.
- Upon death, the Devotee will unleash a wave, which pushes away enemies and deals 250 points of Electricity damage and status.
- The best place to complete their codex entry (requires only one scan) is Arbitration since if a player is downed they cannot be revived so the Devotee just joins the fight. This gives more time to scan them. However, note that the high levels of enemies present in Arbitrations may be an issue, killing the Devotee quickly.
- If the player is revived by them while also getting revived by their Sentinel with Sacrifice, the companion will still get destroyed upon revival.