>>1603434I'm pretty sure it's just perspective, as far as the figures go.
Going by what's said on Danbooru, I'm pretty sure they are the same person. The second image being the sequel, of sorts.
As far as the video goes, I figure he would use it to make absolutely sure the antagonist of the last story doesn't do anything of the sort to the protagonist of the last story ever again. Whether it be for retaliation for his actions, or just in general.
