Bea, one of the most ripped leaders to appear in a Pokemon game, is a fighting-type expert who will only appear in Pokemon Sword, while the ghost-type specialise Allister and their creepy Mimikyu will be a part of Pokemon Shield.
The Pokemon Company released a bunch of new information about its upcoming Pokemon Sword and Shield titles this morning. It's possible that legendaries other than these two wolves will be version-exclusive, as well, as certain Pokemon were in Pokemon Ultra Sun and Ultra Moon's Ultra Wormholes. Leon won the first ever gym challenge in Galar and was undefeated since, becoming its first and only champion. We know of two exclusive gym leaders right now, but the language on the games' website seems to suggest more could be coming. Rose runs a large entertainment conglomerate which introduced dynamax to the league and broadcasts gym battles worldwide. I smell a potential twist villain, but only time will tell. In this video, we learn of how to go even further beyond, with Gigantamax, which not only changes a Pokemon's size, but also its appearance as well. Including Gigantmaxing, Dynamaxing and the Mega Evolutions and Z Moves might be a bit redundant. And Alcremie, for what it's worth, also has the ability to Gigantamax. You may get your wish soon. This would cover the regular cost of buying each individually, but this version has the added bonus of allowing you to face down Larvitar and Jangmo-o in raid battles, allowing you to obtain both pokemon in the early game regardless of version exclusivity.