That's the screen-used Boar suit.
Wyatt Weed was the suit-performer. That picture was taken between takes on the studio lot.
With exception for the helmet, paint-scheme, and second computer gauntlet, there's nothing specific to that character. The suit used to create the Boar was from the same mold as the stunt-suit used for the main Predator.
They used that suit along with a few casts of the suit worn by Kevin Peter Hall for the Lost Hunters.
Ram, Hippie, Borg (Onyx), Doppelganger (P1 Helmet), Both Boars, are examples of the smaller stunt-suit.
The Elder, Gort, Snake and Hero Predator were all from the molds of the suit worn by Kevin Peter Hall. You can tell because the disc holder, cod-piece, and various other details are larger and different than that of the stunt-suit. Remember, the stunt-suit was made for someone who was dramatically shorter than Kevin Peter Hall.
Also -
If like me you were confused by this picture:
... look down towards the floor in the picture. You'll notice that some of the Lost Hunters are standing on boxes/crates. Tee-Hee.