Bart Allen

Bart Allen was a teenage speedster and a member of the Flash Family who went by several code names. He was born in the 30th Century, the grandson of time-traveling speedster Barry Allen, although he returned to the past to continue his family's legacy. Because of his strange origins, he aged at an inconsistent rate. Originally, he took the name Impulse to reflect his impulsive nature, but later changed his alias to Kid Flash when he grew older. There was a brief period when he became The Flash after Infinite Crisis, but he was killed by the Rogues during Full Throttle. Later on, he was resurrected during Final Crisis through his connection to the Speed Force and returned to his role as Kid Flash, before sacrificing himself during Flashpoint. Bart Allen was a member of the New Titans, Young Justice, the Teen Titans, and the Legion of Super-Heroes.Bart Allen was the product of the union between two families who had been bitter rivals for centuries. His father, Don Allen, was the son of Barry Allen, the second Flash, and his mother was Meloni Thawne, daughter of the Earthgov president and descendant of Flash villains Cobalt Blue and Professor Zoom.

Shortly after Bart's birth, his family was attacked by Zoom, wishing to end the union of the rival families. They, along with the family of Don's sister Dawn, attempted to flee to a parallel Earth using the Cosmic Treadmill. However, Zoom sabotaged the device, causing an explosion which created a rift in the multiverse. Zoom was ultimately defeated by an army of three different Legions of Super-Heroes, but Bart and his family were subsequently stranded on Earth-247.[2]Bart was born with his grandfather's speed. He had an incredibly high metabolism and also aged at hyperspeed. When he was chronologically 2 years old, physically, he appeared 12 years old. President Thawne had the Dominators kill Don and his twin sister, Dawn Allen. The Dominators then abducted Bart, who was later captured by Earthgov for observation and experimentation, including the creation of the clone, Inertia. The scientists of Earthgov raised him in a virtual reality environment so that he aged as swiftly mentally as he did physically. Bart was going to die of old age very quickly, with Earthgov not doing anything to fix his problem. His grandmother Iris West took him away and brought him back to the 20th century, so that her nephew, Wally West, the third Flash, could show him how to control his speed.

He later adopted the superheroic identity of Impulse.After Wally helped him solve his aging problem and Bart helped Wally defeat Kobra, Bart moved to Manchester, Alabama with Max Mercury. Max had used his connections to supply Bart with a birth certificate, etc. Bart began the ninth grade at Manchester Junior High. He managed to make quite a few friends, chief among them Carol Bucklen. Max continued to train him in the art of superspeed, having him run obstacle courses while dodging axes and knives, solve jigsaw puzzles in mid-air, etc., ultimately enlisting his aid to battle his old foe, Savitar. During this time, Bart served a brief stint with the New Titans before becoming one of the founding members of Young Justice.

After Max became lost in the Speed Force, Bart was taken in by Jay Garrick, the first Flash, and his wife Joan Garrick.