In the books, orcs are mentioned as "having arms like the apes of the south"...
only one little problem, What apes of the South!
Apes would be similar to half-trolls in size, but would resemble more of a balrog body shape, where their heads are hung lower, arms are bigger than legs in proportion, and they are kinda hunched over.
They would be brown in color, and would have 50 health, and deal 4 hearts of damage per hit.
They would be found in the far Harad jungle and Jungle edge. Tauredain would use them as heavy units, like evil factions use ologs and trolls. They would be hired from a Tauredain ape trainer, which would be a new tauredain NPC.
This way good guys can get a heavy unit, since its not really fair that only evil players can currently.