[notorious]

She reports to Gideon and tells him that the Mandalorian still has "the asset" and then the camera pans back to reveal rows on either side of the wall of black clad troopers in some sort of hibernation. And this has sent social media into a frenzy. Clearly they're being engineered and speculation suggests they are more than likely a form of Dark Trooper. These were advanced battle droids and infantry exoskeletons that featured heavy armor, powerful weapons and jump packs for increased flexibility and tactical advantage.

However, it's unlikely to be the DT-series sentry droid model and according to Twitter, if you watch the end of the episode with descriptive audio enabled, it describes them as "Dark Troopers," which means they'll probably require cloned soldiers inside, operating them.

https://www.space.com/star-wars-the-...pisode-4-recap