So yeah, what characters play with the b-balls? Woah that sounds wierd...
Heres what I know so far & how to achieve ultimate dunk potential. Also be sure to take flash/ghost to meet full dunk potential on any toon.
Darius - Stack bleed 5 times, hit R
Jarvan - Press R
Panth - Press R & W for ultimate dunkage
Vi - Press R
Ziggs - Press W, launch yourself into the enemy & Press q+R. You'll get flagged for double dunking, screw the Ref...
Olaf - Stack CDR, Press E, the enemy will call hacking for dunking so fast...
Jayce - E cannon form, run into the enemy & press Q for super fast dunking
Tristana - Press W into team, press R to defend the hoop
Master Yi - Press R, dive into the team, press Q, auto attack for the unsatisfying finish...
Riven - Press R, then Q twice, auto attack once, W, auto attack, Q. If you didn't dunk the finish, go home
Garen - Press Q, Then R, gg
Syndra - Q, W, Q, R, now your team has an unfair advantage of balls on their side (hue), let the dunks commence...
Alistar - Q, Q, Q, Q, R for manliness, Q
Jax - Charge up E, Q for the win. Finish appropriate dunking if necessary by harassing them with your "stick"
Lulu - Not really a dunker, but a reverse dunker. If your dunkers are having trouble getting their dunks right, run into the team, press R on yourself, and let your star players handle the rest.
So am I missing any, feel free to describe how if you don't think its obvious enough.
Feel free to add any champs & why you feel they would work better