Evolved from Charcadet Armarouge is one of the brand new Pokemons in Scarlet/Violet, It's a Fire/Psychic Pokemon it is easily one of the Pokemon in the game.
Koraidon is one of the Legendary pokemon in Scarlet, it is a Fighting Dragon type pokemon, and it also serves as your conveyance in the game.
Stonjourner a big Rock pokemon with some really good stats and move-set, it's another pokemon that just came out with the release of Scarlet/Violet.
Tauros (Paldean) this one here is a returning pokemon, the Tauros in Scarlet is a Fire+Fighting type mon, and trust me when i say it's a heavy hitter.
Oranguru was first introduced in Pokémon Sun/Moon and now he's back, he's a Normal/Psychic pokemon and a good addition to the team as well.
Next up we have a Dark/Dragon Pokemon, Deino evolves into Zweilous and Hydreigon is his final form, it's really awesome pokemon and he's back in Pokemon Scarlet.
Stunky which evolves into the Skuntank is a Dark/Poison type Pokemon available in Scarlet, it was first introduced in Diamond & Pearl but since then he had come in many games.
Next up we have Skrelp which at level 48 evolves into Dragalge, it's Poison/Dragon pokemon with some pretty good moves and stats plus it looks insanely awesome.
Drifloon is a Ghost/Flying Pokemon which at level 28 evolves into Drifblim, first introduced in Diamond, Pearl, and Platinum now he's/she's back in Pokemon Scarlet.
Larvitar (Rock/Ground) evolves into Pupitar then it evolves and becomes a titan-like Pokemon Tyranitar (Rock/Dark), it's one of the best mons in the game.