They’d either look at him and ask, "What even ARE you?" or just get completely freaked out. They might assume he can't talk, or just stare at him with wide eyes, trying to process what exactly is standing right in front of them.

For some reason, I find it hilarious to imagine Rigel and Toliman being absolutely terrified of Astrodude. It’s just like how some people are scared of spiders that are hundreds of times smaller than them.

Also, here is a little drawing of the rogue planets, Astrodude just ended up in the wrong place.

Alpha Centauri as birds!

Adult versions of Proxima, Toliman and Rigil [another dysfunctional family, heh]

In the latest episodes there are more and more hints of other stars appearing. And something tells me that it will be more extensive.

In AU Star-dragons are very social, and it's rare to find them as solitary creatures. It's funny that Proxima hasn't grown much physically since her last encounter with Sun. They were almost the same size when they were kids (she was a little bigger than him, just a little bit). However, Sun has decided to make up for lost time over the years. Let's hope Rigil and Toliman won't bully someone who has equal power and uses it well.

nobody’s forgotten in this house boiii