Well, since you guys seem to be a bit concerned about the individual abilities, how about we break them down, one champion at a time ?
Ahri, The 9 Tails Fox
Race: female Kitsune... no brainer
Class: sorcerer, because of her fire spells and charm spells
Weapon: Ok, this is where homebrewing begins. She attacks with a floating orb, a weapon that hasn't been made into Pathfinder. The closest thing I could find was the Orc Shotput, from WotC's 3.0 Arms and Equipment Guide:
Large Exotic Ranged Weapon
Orc Shotput - 10 gp - 2d6 - 19-20/x3 - 10 ft. - 15 lbs - Bludgeoning
The best way to make Ahri's weapon would be as follow:
Light Exotic Weapon
Glass Orb - 25 gp - 1d6 - x3 - 20 ft. - 1 lbs - Bludgeoning
Since she can control the orb telekinectically, the best way to represent it would be with a +1 returning dancing glass orb, that she catches once in a while to re-activate the dancing property, and since it can only be applied to melee weapons, I thought I'd made the orb like a dagger, as a melee/thrown hybrid.
Orb of Deception - Ahri sends out and pulls back her orb, dealing magic damage on the way out and True damage on the way back.
With the orb being returning, Ahri can simply make full-attack actions with the orb.
Fox-Fire - Ahri releases three fox-fires, which after a short delay lock on and attack nearby enemies.
Three fox-fires, huh ? Hello, scorching rays !
Charm - Ahri blows a kiss that damages and charms an enemy it encounters, causing them to walk harmlessly towards her.
Charm Person/Monster does the trick nicely.
Spirit Rush - Ahri dashes forward and fires essence bolts, damaging 3 nearby champions.
Hmmm... the closest thing I see would be Fire Snake.
Essence Theft - Ahri gains a charge of Essence Theft whenever one of her spells hits an enemy (max: 3 charges per spell). Upon reaching 9 charges, Ahri's next spell has 35%...
I think you can emulate better to ahri if u use a Wordspell sorccer since you can put multiple effects, and there is some word effect wich give you some temporaly Hitpoint so if you add this word to a word used to emulate his skills, in this way you get his pasive skill.