Thread:Rozkyontherockz/@comment-1852193-20191228061935/@comment-32493793-20200106165712

Look, this is something that Roy, the guy who is in charge of all of this, has already addressed: "Transformers: Again, I'm a big fan but their mythos and cast of characters is so dense that I don't think that they'd have a place in Earth-27." Link: https://www.deviantart.com/roysovitch/journal/Earth-27-External-Franchises-823012123

And unless your brother is willing to pay $150 for a single character portrait, you might be better off trying to understand that.