The original drawing of them both, I wanted to update their art
Lexy the Eevee and Caldera the Chandelure.
Lexy is one of the two bookkeepers in Merlot's library. He sees to it that the books are properly organized. Merlot often tries to keep him in maid uniform, but he just discards it when she leaves or isn't paying attention, so she's mostly given up on the effort. She would be a little more strict with keeping him in dress code if it weren't for the fact that he's keeping a sort of old-school Pokédex-- binders of information on each of the existing Pokémon.
Caldera is the other of the two bookkeepers in Merlot's library. He mostly follows Lexy around as a companion. He's immune to Merlot's dress code due to his fiery body. He uses his telekinesis to move around books and help organize them on the higher shelves. He's very possessive with the books and hates foreign Pokemon nearing them.