Dila is the mysterious figure tied to the meteor disaster that shadows the whole of ANANTA's story — the event bound to Chaos itself. Official material describes her as investigating the catastrophe, while hinting her agenda is her own.
Her demonstrated powers are apocalyptic in scale: control over meteors and the ability to assume a giant form — capabilities that dwarf the street-level kits of the announced roster.
Official hints place her on the antagonist side of the board, or at least outside anyone's chain of command — a counterweight to the Captain's task force rather than a candidate for it.
Whether Dila is playable, a recurring boss, or the story's final question is unconfirmed (tracker). Her dossier stays short by necessity: she is the character the marketing wants you to ask about.