Exploud, It was one of my MVP in my very first run of Reborn when I knew nothing much about pokemon.Early game it really helped with echoed voice and later helped with hyper voice and boom burst.Since it had scrappy I even used it against Shade.This pokemon was the sole reason I won against Aya.There are many times in Reborn when you have a partner so every fight becomes double battle.So a stab hyper voice really does a lot of damage.If you can partner it with a pokemon with telepathy like gardevoir you can just use boom burst.It also can learn surf and elemental fangs by the tutor so you can let it hold expert belt for more damage.
Lunatune,this was also a MVP in my first run.First of all,levitate is a really useful ability.It learns psychic really early and is helpful against Aya,Samson,Kiki,Ciel and Charlotte.This pokemon alone took out 6 pokemons of Chorlotte.Just a simple trick room and rock slide combo.It can also learn moonblast by relearner and bulldoze which is helpful.In gen 7,it can learn power gem by relearner.