The Brains

Brain #1: Eclipse
The Electric type
Pokemon: Raichu,Jolteon,Electvire

Brain #2: Lillie (from sun and moon) (not in anime story thing)(in that there's only 5 battle brains)
The ice type
Pokemon: Alolan Ninetales,Abomasnow,Alolan Sandslash

Brain #3: Jacob
The Normal type
Pokemon: Gumshoos,Slaking,Zangoose

Brain #4: Beast
The Grass type
Pokemon: Lilligant,Venusaur,Leafeon

Brain #5: Dawn (From the Diamond,Pearl and Platinum anime)
The Steel type
Pokemon: Empoleon, Steelix,Magnezone

Brain#6: George
The fighting type
Pokemon: Primeape,Hariyama,Infernape