Race-Goblins

Goblins are considerably smaller than Orcs, but they compensate for this
disadvantage with a feral cunning that their larger brethren lack. Goblins are
constantly bullied and intimidated by the Orcs and this has caused them to evolve
into sneaky and insidious creatures whose comical appearance belies their
malicious intelligence. In many ways Goblins are the brains behind greenskin
tribal society. Goblins frequently are the Shamans of their tribes and are often
clever enough to use the leverage associated with this position to manipulate
the larger but slower Orcs into doing their bidding.
Goblins are also the most adept of the greenskin races at using technology. Goblins build objects of simple, but effective design. As with all greenskin construction, machines and siege engines cobbled together by Goblins have a very primitive look, but a five-hundred-pound rock hurts just as much when it's hurled through the air by a crudely-fashioned greenskin Rock Lobber as an ornate Dwarf Grudge Thrower.