They do look powerful, especially when they're working together like that.

[She frowned, thoughtfully looking at Nagi's Pokémon. She didn't have any psychic types, besides Mim who didn't exactly count. Kawa, meanwhile, hhad decided that she was excluded from the conversation, and snuggled in her trainer's arms. Night night!]

No. I haven't seen many psychic types when I traveled.

[...]

Except for the ones in Violet city.