Look who is in the trailer for the next episode of THE FLASH (2×10: Potential Energy), airing January 19, 2016 :)
The Flash | Potential Energy Trailer | The CW
YouTube: The CW Television Network
Published: December 8, 2015
Video Description: Every secret comes at a price. The Flash returns Tuesday, January 19!
Incase you blinked and missed it, that’s Aaron at the 00:21 timestamp.