Leon is the main antagonist, after regional domination with Eternatus. He is a fraud champion who uses a Gigantamax Charizard for popularities sake.

It’s a large, European medieval Dragon.

He secretly has Team Yell put down every other would be champion through soccer hooligan shenanigans (defacing stuff, slander, harassment at matches) and full blown regional harassment, consolidating the throne (and all of the subsequent sponsorships) to him.

Eternatus is the original Dynamax Pokemon, an Ouroboros of immense size. Leon believes that being the peoples champion will make him worthy of Eternatus.

Several items are being removed for less clutter.

Dynamax raises stats and gives a slight standard boost to moves.

Gigantamax boosts stats way more but focuses on a singular move.

Zacian and Zamazenta are guardian Pokemon meant to defend against Eternatus, and were the Pokemon of a brave knight centuries past. The knight was killed, and the teo wolves took up sword and shield and helped build Galar as it stands now.

Lapras for example is Gigantamaxed around Perish Song and is found in Lake Miloch.