Finally posting this after Bede was revealed so ya'll didnt think I was cheesing you.
Bede uses the starter supereffective against yours. Also uses a Corviknight as well as his Duosion.
He is the jerk rival, and son of Chairman Rose, which is why Rose endorses him.
Hop hates being in his brother's shadow, and as the story progresses he gets more and more angry.
Leon is a fraud champion, and used his charm and charisma to stage fights with Chairman Rose.
Him and Sonia use to date, but then Sonia found out about his corruptness and decided to break it off.
The order of the gyms go: Grass, Water, Fire, Fairy, Fighting/Ghost, Dragon, Rock/Ground, Steel. The final gym leader is the queen of Galar.
The Final Starter Types are: Grass/Rock, Fire, and Water/Ghost.
Grookey gets a signature Rock type move that is basically like Outrage.
Scorbunny gets a signature move that turns all fighting type moves into STAB.
Sobble gets a signature move that is both water and ghost type. Kinda like Flying Press.
Galarian Forms are every Generation except 7, and include Lapras, Skuntank, Farfetch'd, Jumpluff, Darumaka, Cacturne, and more.
Galarian Forms can't Gigantamax.
Your starters can Gigantamax, and only Pokemon that are at their final stage can Gigantamax. The fat Pikachu and Meowth aren't true.
The actual Evil Team is Team Royal, and they act as knights helping you on your journey. Their true goal is to harness the power from Eternatus and Meteodyna. Oleana is the leader.