Mileena´s "Let Us Dance" quote comes from Mortal Kombat 9 during her pre-fight introduction. The game which was released in 2011 shows Mileena´s playful nature which is true of many of the titles.
The model used is Mileena´s Mortal Kombat 11 default skin which was painted and then animated using Unreal Engine.
Animation & Club Scene were created using Unreal Engine
Other tools used to rig paint and animate Mileena include
Blender
Adobe 3D Substance Painter
Adobe Photoshop
Mixamo
Adobe Premiere Pro
The initial 4K render was done in Unreal Engine and brought into Adobe Premiere Pro to add sound effects, transitions and final render.