>>30890976Koko: Ultra, followed by Level, repeat ball and fast ball
Lele: Love Ball, don't fall for the heal ball meme.
Fini: Dive Ball, followed by Net Ball and Master Ball. I think Dive Ball is just plain nicest to look at, has the best release animation, and it matches her blue accents very well.
Bulu: Timer Ball, Repeat Ball, Luxury Ball or Friend Ball. Bulu is hard because it depends on what you want to bring out the most. Timer to bring out the whites, this is my fav because it's not used on much else. Repeat matches colours really well in exchange for dropping the whites, but has a horrible release animation suited for electric types. Luxury matches well, gold as a sub for yellow, has a red strip etc but I feel like it's a bit too dark (my second fav tho). Friend Ball is more to bring out its typing, instead of matching the pokemon colour think of it as it matching the overall "field" or "farmland" it's suited too since it's a bull. It also matches its typing and the release animation is perfect for that too, the little tear drops are also perfectly coloured to suit.