Oh, god, Insectum7's right.
Look for images of the 2nd edition 40k
boxed set (the one with the cardboard dreadnought). That's what Orks looked like back then.
Those Orks in particular were pretty awful, as were the Tac
Marines that were sold alongside them (although they are more passable from a distance). I wouldn't take that model as a "Thats what Orks looked like." There are better examples.