Speedsters.

( from what damian's aware of with thawne, the name is likely intentional. he has a personal connection to barry allen, it isn't just them being rivals due to thawne wanting something and allen being in the way. but they also haven't been among his top concerns as of late. )

Metahumans with the ability to tap into the Speed Force. It's a cosmic energy field, one of the seven forces of the universe.