who does danielle panabaker play as in flash
The Flash's Danielle Panabaker Teases the Introduction of Killer Frost and Velocity 9. The Flash fans have been waiting patiently to meet Caitlin Snow's (Danielle Panabaker) villainous alter-ego Killer Frost. On Tuesday we'll finally get the honor, when Barry (Grant Gustin), Wells (Tom Cavanagh) and Cisco (Carlos Valdes) visit Earth-2.