Light Kabilla (Kabilla)

Kabilla is the second fastest monster in this game, with a Base SPEED of 120 (Awakened) only Spectra, the Fire Griffon can show off a better SPD stat. That also means that Kabilla is the faster ATB booster in the game, easily outspeeding famous units like Bernard, Orion, Frigate or Megan.

As a ATB booster, Kabilla can get the initiative easily, boosting other units ATB and protecting them with an AoE anti-crit shield that is specially effective vs AoE nukers like Lushen as the attacks wont get many critics and the damage dealed will be much lower.
The first skill can get a 100% efective Defense Break, so revenge runes are a must.
And finally, the Second skill is plain damage with no debuffs. This is a pity, because with a better second skill, this unit would be just awesome.

So bear in mind: if you have her, you can get more SPD than Bernard with the same runes, and if you don´t have the harpy but fight vs her in PvP, consider she can outspeed your ATB booster in case you´re using one.

what do you think of ATK on 6 instead of HP ?

It will work, of course, but you have to think in what´s the main purpose of this monster. I consider her a support unit better than a nuker, so I´ll give her sustain instead of attack power.
However, you can get decent damage with S2, so if you don´t have good HP runes for position 6 you may try attack and see how she performs.