Visual references - Ciel

Ciel is a rollerskating girl that might fill the function of Kula from K' Team in KOF, just in this case she's Ryu and Xeno's partner.
To begin with, there are a few moves and animations that resemble the ones Kula. From running:

 ... to a few punches and kicks:

Another big inspiration for Ciel seems to be May Lee, this similarly trendy fashioned character with lots of movement and energy on her legs. They share a similar style of taekwondo kicks:

As well as their particular style of hopping:

Ciel's fighting style has also been compared to the one of Lilica (Arcana Heart). Both of them fight wearing rollerskates and deliver energy-infused kicks:

Ciel's special moves have a couple animations resembling this supermove from Lilica:

Aside from her kick-ass fighting style, Ciel has a projectile move. This one is similar to the one of Poison (Ultra Street Fighter IV), and they share more than the basic color, since they're both short-range travelling and fade within a short range:

The similarities with Poison don't end there. A couple kicks from Ciel are similar to the one of the famous Final Fight character:

And finally, Ciel's Hidden Esoteric move is similar to one of Leona's supermove. Both of them consisting in a ballet-like pose, followed by a roundhouse kick that launches the opponent forward and another one that makes the fighter rotate upside down for a brief moment: