Caius Ballad

a character Kaias is an antagonist from Final Fantasy XIII-2. He is said to act as Lightning's rival or foil. He is depicted on the game's logo with her.

Appearance
Kaias has long, dark purple hair adorned with feathers and tribal beads, and wears a long, purple bandanna. He wears a form-fitting black and purple outfit that bears a strong resemblence to Bahamut, and wields a large sword that emanates a purple flame. He is Chaos Bahamut's master.

Story
In the game's first trailer, Kaias was shown crossing swords with Lightning. Toriyama has described Kaias as being of equal strength to Lightning, and being able to fight on even terms with her. He is said to be on a similar mission to Lightning's, and will be in her way as she tries to complete her own. Toriyama has also said that Kaias has a relationship with Lightning as her fated rival, and is somehow also connected to Noel Kreiss (both know each other by name, at the very least).

In the TGS 2011 trailer, he appears in front of Noel and Serah in Oerba, with his female companion, a veiled woman named Yuru, saying she and Kaias have been watching over them. Another trailer shows Kaias doing something to a fallen Noel, but specifics have not yet been released.

Development
Kaias' clothing was designed by Yusuke Naora, who also designed Serah and Noel's clothing.

Etymology
Kaia means "Pure" in Greek.