Allen first appeared as the superhero Impulse , a teenage sidekick of the superhero the Flash , before he became the second hero known as Kid Flash .
Bartholomew Henry Allen II is a fictional superhero in the DC Comics Universe .
superhero first appeared as the superhero superhero , a teenage sidekick of the superhero the Flash , before Bartholomew Henry Allen II became the second hero known as Kid Flash .
Bartholomew Henry Allen II is a fictional superhero in the DC Comics Universe .