PsychoLogical
Black and White, Yin and Yang, Light and Dark.
If this was Pokemon The Series: Sword and Shield then likely. But it isnt. Ash is no longer doing gyms, hes doing the PWC where he’s going to likely need fully evolved mons to even continue climbing as he goes up especially when nearing the Hyper Class.I agree with the statement grookey as grookey, bcuz every series there is one starter remains unevolve and least popular among galar starter is rillaboom makes it more understandable to be remain as grookey.
But it doesn't fit ash? I don't think so. Grookey could be piplup and oshwatt of galar.