Metal Gear EXCELSUS

In the TGS Trailer of Metal Gear Rising: Revengeance, a mech of considerable size  that is most likely a Metal Gear is the weapon seen possibly preparing to attack Raiden. This robot seems to be a quadruped similar to Peace walker (Basilisk) it also appears to have two railguns under its neck as well as Two large Cannons on top of its head. It is possible that this Mech will be piloted by Senetor Steven Armstrong as the final boss battle.

Behind the scenes
A leaked list of trophy/achievements, specifically the trophy/achievement "Pond Scum", implied that the mech was the "Vodomjerka", due to the icon having a passing resemblance to the mech, and the unlock conditions for it being to destroy five Vodomjerkas in the game. However, due to the size and clarity of the icon, it is currently undetermined whether they are intended to be the same.