Its an original design with nods to both versions of the character but primarily pulls more from IDW than G1. Proportionally, in terms of shapes, details and certainly in terms of his head sculpt especially his is far far more idw than he is g1. But don't forget that the idw design was really just an artistically stylized version of the g1 with more distinct features so this figure can easily pass as both iterations of the character, its only personal nitpicks that determine otherwise. G1 Overlord was very very thick in the torso and limbs, IDW overlord is much slender and that body type is more strongly represented in mmc's design. Regardless of all that I'd still love to see two versions, 1 idw colored, 1 g1. Because each deco has its own feel and different look going on.