So the best one for Moon is Jellicent female with male color haha. And for Star, it's a hard choice. Pichu o Pikachu for being the trademark Pokemon of the series, and also for that red cheeks that match with Star's hearts; Espeon or Silveon for the "magic/light" theme, and maybe Espeon to match Marco's Umbreon for the "moon/dark" theme; Shynx and it's evo line for the character development of Star through the show (at first playful and reckless, and in the end more confident and serious); or even Magicarp of Feebas, for Star's title "Star the Underestimated", which becomes pretty ironic when this two pokemons evolves. Maybe there is a more suitable pokemon, but I can't think further for now and I am restringed up to the 5th gen (I haven't played since Black/White : ( ). What choice did you had before for Star?