Trash is Grib's "SIR Unit". It has no personality at all, and no intelligence what-so-ever, being that Grib controls it with his PAK.
Trash looks as though it is made completely out of scraps, and has dark yellow colored parts and a small device on its head, which is the voice mail thingy.
Turret gun in left hand, razor blade in right hand
Worst SIR Unit in the history of EVER