Rockwell and Egbert Balls were two brothers created by the Institute for Irresponsible Genetic Engineering. Lacking any other qualifications, they decided to set themselves up as superheroes for hire in order to make a more or less honest living, though neither was by nature particularly heroic.
The Balls Brothers appeared in 2000 AD progs 1128 to 1131 and 1141 to 1147 . They have not been seen since, apart from a reprint of their first outing in issue #302 of the Judge Dredd Megazine and a cameo in the Tharg story in 2000 AD prog 1280.