The fragmented one, 3 frames in a trench coat, Unlimited Gun Works - Xaku!
Release date: 2020-08-25
Passive: Shifting their pieces unpredictably, Xaku has a 25% Dodge chance to harmlessly phase through incoming enemy weapon attacks, while protected by a 25% Damage Reduction against area of effect damage.
Xata’s Whisper - Wield Void damage for all attacks from equipped weapons when activated.
Grasp of Lohk - Void Tendrils steal weapons from nearby enemies to use as your own floating, auto-targeting armament.
The Lost - Cycle through and cast one of the three abilities originating from the Warframes that make up Xaku: Accuse, Gaze, and Deny.
The Vast Untime - Temporarily shed the outer pieces of Xaku in a destructive blast, then stalk the battlefield in a new, swifter skeletal form. Enemies damaged by the body shrapnel are rendered weaker to Void damage.
Acquisition: Main blueprint will be awarded upon completion of the Heart of Deimos quest. Component blueprints are acquired from Cambion Drift Bounties.
Because of that scaling damage, though, Xaku excels at Archon Defense in my experience.