Sentinels are robotic companions, similar to pets in other online games, that will follow the player around and either attack enemies or support the player. They also level up, like with weapions and Warframes, and are able to equip many different things, such as weapons and even their own Modules.
All Sentinels, except for Djinn, can be bought for 75 Platinum or the blueprint can be bought for 100,000 Credits. You need the following four Resources in order to build one of varying amounts (Djinn is the only one that differs), as well as 15,000 Credits. It takes a total of 24 hours for the Sentinel to be built, which can be removed completely by using 30 Platinum.
- Alloy Plate
- Circuits
- Nano Spores
- Control Module
