Citizen Abra is from the 64th century, at a time when science has made stage magic obsolete. He desires a career as a performing magician, so he goes back in time to find an audience to entertain, stealing a time machine and inventing a device to paralyze the guards, and soon clashes with the Flash. He has a hypnotic device that makes people clap regardless of their thoughts, which he uses to force applause from audiences even when they do not applaud his magic tricks.

--https://en.wikipedia.org/wiki/Abra_Kadabra_(character)