Caitlin Snow

Caitlyn Snow is an upcoming supporting character in the episode The Man Under the Hood, and will be a main character in The Flash's upcoming pilot and will be portrayed by Danielle Panabaker. She is a scientist at S.T.A.R. Labs and was working during the S.T.A.R. Labs particle accelerator disaster. This event will cause her to gain powers of Cold and Ice Manipulation.

The Man Under the Hood
Caitlyn Snow will make her debut appearance in this episode, more will be released when it airs.

The Flash
Caitlyn Snow will act as an antagonist to Barry Allen, in the pilot while he is figuring out his powers