>>39812160Wally was shown in the animated trailer.
Barry is in the base game with his partner being the Empoleon line.
Hilbert is a banner character with his partner being the Samurott line.
Hilda is a banner character with her partner being the Emboar line.
Cheren is in with his B2W2 design and Stoutland, and he also has an alt for his BW look. But it's unclear if it's a whole alternate character like Sygna Suit Brock or just a cosmetic change.
Nothing is known about Nate other than his character index number (100) and that his sync pair story's title is "Introducing Nate" instead of "A Day with Nate".
Rosa is in the base game and her partner is the Serperior line.
Hugh was shown in the animated trailer with Silver and Wally.
Calem is a planned character with Espurr that evolves presumably into male Meowstic.
Hau of course has Raichu (Alola Form) and is in the base game.
Gladion's partner is unconfirmed but it's probably Type: Null and Silvally. He was shown in the animated trailer with Z-Power Lillie and Lusamine.
Kukui is also confirmed with Lycanroc (Midday Form) instead of a starter, so no indication for what the SM protagonists will have.
Missing protagonists and rivals are May, Lucas, Dawn, Serena, Elio, Selene, Chase, Elaine, Bianca, Shauna, Tierno, Trevor, Trace, and anything from Sword and Shield. LGPE also has almost zero acknowledgement except for Misty's outfit (which wasn't even supposed to be her standard outfit since her FRLG bathing suit is programmed in as that), and it also seems that she was added fairly late.