Impulse is an identity shared by three comic book superheroes published by DC Comics. Kent Shakespeare was the first DC Comics superhero known as Impulse, he debuted in Legion of Super-Heroes vol. 4 #12 (October 1990). Bart Allen is the second DC Comics superhero known as Impulse, he debuted in Flash vol. 2 #92 (June 1994). Iris West is the third superhero known as Impulse, she debuted in Flash vol.2 #225 (October 2005) Richard Kent Shakespeare was revealed to have used the codename in a flashback sequence in Legion of Super-Heroes vol. 4 #53. Suffering from a hyper-accelerated metabolism, Bart Allen was aging at a faster rate than that of any human being thus causing him to appear the age of twelve when he was chronologically only two years old.
Contributions by Xero, J Greb, and Emperor.