Hehehe, cool guys. Nice name.
Looks good. Some thoughts:
In the beginning of the intro video you say that the game can be played with anywhere between one and seven models, which seems a little random. The rulebook doesn't talk about model numbers as far as I can tell, but the "Game" section of the AR website says "You can get started playing Arena Rex with only 3 models per side. The standard game size is 5 minis per player, a battle of this size usually takes about 45 minutes."
Playing a game of just one model vs. one model might be interesting to try though. Never considered that option.
Anum seems really popular for some reason!
Super strange that Acerbus comes with two heads of different sizes. I don't get that at all. Can anyone explain?
But I love the way you have made Acerbus leap into the air in your assembled model. It looks very fragile but extremely dynamic!