Tim Cox was a dear friend of ours, one of the most kind hearted individuals I've ever known, and an incredible artist.
As the video explains, he evolved the look and feel of the kerbal models and their design for KSP2, along with many of the new rocket parts.
I've made sure he also lives on in his own creation, as Tim C. Kerman. You can see a shot or 2 of him in his black and orange space suit in the video as well.