I need some help

I want to change the protagonist's name to Astral Radiance or Astral Shy. I can't make up my mind. I do want the first name to be Astral, but can't think of a last name. I like astral because it means it resembles the star and used when describing other worldly experiences. Since the protagonist is from another world and Luna will be most fond of him, I think it fits.

Also what foals would be good friends with him. Furry Heart and CMC are obvious, but I think it would be also interesting that Diamond Tiara and Silver Spoon try to be friends with him. Are there any other foals that would make good friends with a colt that is being hunted by an eldritch monstrosity?