As it wasn't too obvious, you're Luther's favorite.

As the youngest of course you are. It may bring jealousy but if you get some extra affection...well it doesn't hurt. You have the power to make Luther bend to your every will, and Randal uses you to get what he wants by telling you what to ask to Luther..

Though being the favorite also comes with it's cons, he's more overprotective with you almost an helicopter brother and last but not least the unwanted pampering...You were no baby! But were treated like one...