>>34181492Not him, but you can't get a regular Raichu in SM at all without trading, because Pikachu always evolves into Alolan Raichu in Alola. You'd need to trade up a regular Raichu from Gen 6, meaning it can't be in a Beast Ball since they were introduced in Gen 7.
You can get a Beast Ball Raichu in USUM though, since you can catch a Pikachu in a Beast Ball and then evolve it in Ultra Space to get a non-Alolan Raichu.