"Sticks are dumb" -xion

1) the eyes

Notably, on a first glance he looked like he had brown eyes, but its actually central hecterochromia. The centre is gold/brown but the rest of his iris is grey. And guess who has grey eyes?

(His eyes might be a kinda grey-purple colour but that could be down to stylisation but also note, Eraqus does have grey eyes although more blue toned than Brain's) BUT- thinking back to the central hecterochromia, we dont know what happened to Brain during KHML, so maybe something occurred for this to happen?

2) The flow of his hairstyle

The flow of his hairstyle is very similar, if not the same to Brain’s (I did also refer to who is possibly Luxu at the end of UX to get a better look at Brain’s hair, also ignore how messily I threw the images into the canvas)

You may be thinking, hey doesn't KH4 have more wavy hair compared to Brain? Which yes, true, but this is something else that could be drawn down to either stylisation or maybe just Brain's hairstyle has slightly changed over time as its been grown + cut.

3) Facial features

They're eyebrows, noses and mouths look exactly the same plus its funny how we see this guy of all people with a breif smile when we've seen Brain on 2 occasions with the same smile.