Who Is Jessica Parker Kennedy's Mystery Girl on 'The Flash'? No One Actually Knows!

Jessica Parker Kennedy popped up on The Flash in the most mysterious way during the crossover event and it sounds like she’s going to stay that way when the series returns in January.

The actress’s character is just “Mystery Girl” — no name, no description, according to her.

“It’s really funny,” Jessica shared while speaking with Bustle. “They have me listed as ‘Mystery Girl’ and I just hang out as Mystery Girl on set.”

“Even [the costume department] are like, ‘Who are you?’ And I’m like: ‘I am Mystery Girl.’ It’s been a very secretive mission and it’s been fun to be a part of.”

Jessica added that her Mystery Girl — who could be Dawn Allen, Barry and Iris’ daughter, or even his granddaughter, Jenni Ognats — will be back in future episodes.

“I’ll be around. You’ll see me at least one more time, I can tell you that. You’ll see me again on the show and things will make more sense.”

The Flash will return January 16th on The CW.