Hello, in response to some of your questions:

1. Size of the Maketoys green giant (combined form) is approximately the same as Fansproject Colossus ("Bruticus") figure.

2. The individual figures themselves are a little smaller than the Classics / Generations / Henkei deluxe figures.

3. The Maketoys green giant set is a set of all six figures, designed to emulate the Constructicons, with all necessary add-ons to form the "Devastator" figure.

4. This is an entirely third party set (figures and add-ons).