Bart Allen, also known as Impulse, is the grandson of Barry Allen from the future and a speedster superhero. Bart is an optimistic, hyperactive and funny teenager.  He often speaks before thinking and can be a bit clumsy, but his heart is always in the right place.  He is loyal to his friends and teammates, and is willing to risk everything for them.  He also has a great passion for speed and adventure, which leads him to get into trouble from time to time.