MQ-320

In the AR Trailer for Metal Gear Rising: Revengeance Raiden was seen jumping out of a large helicopter onto a UCAV (Unmaned Combat Aerial Vehicle) and he then proceeded to hijack it most likely to protect the large helicopter from being shot down.

Usage
This Aircraft was possibly used by Desperado Enforcement LLC

Behind the scenes
If you look at the overall structure of the aircraft It slightly resembles a Northrop Grumman X-45 but with curvy wings.