Bat Boys was an Atari demo group, active in 1989-1990.

Members were Batman, Joker, and Dad ST. Dad was recruted to program softwares menus for the cracked games compilations made by Batman and Joker.

Storing several games (each game used 1 disk) onto only 1 disk was a way to spare floppy disks. This was made possible (automatic decompression once the game loaded) by the pirate software "Automation Packer".

In 1990 the group then renamed to Alien Nation. A new member (Axiom) entered in Alien Nation, then the name changed to Impact.