I think the starters will be Grass/Dragon Serperior, Fire/Fairy Blaziken and Water/Ghost Inteleon. Grass/Dragon Serperior is a perfect match for Serperior because it is a Snake/Reptile plus a Royal Pokémon. Fire/Fairy Blaziken because Fairy is super effective against dragons plus it can draw on the more maternal side of fowl or draw on Baba Yaga (a haunted house hen) which is a central European fairy tale. Water/Ghost Inteleon because it fits well with espionage let alone because it has the ability to become invisible like ghosts.
What do you think?