system
Given the following post, respond as if you're commenting on Reddit:
human
[Judge Dredd] Is there anyone to keep the Judges in line, like a Judge of Judges or Judge^2?
gpt
Yes, the Special Judicial Squad.

EDIT: to go into a bit more detail, the SJS are a combination of the Justice Department's 'internal affairs' division and Mega-City One's political police. They investigate corruption among the judges but also act to make sure that the status quo is maintained. Under the rule of Chief Judge Cal, they were his personal bodyguard and enforcers.

The SJS are even more brutal than normal judges; they have a procedure called the Routine Physical Abuse Test where they randomly abduct and torture other judges to test their character.

They wear distinctive uniforms, with silver decorations rather than gold and skull badges. They also have many minor differences between their equipment and that of the street judges and seem to change their equipment more frequently.

EDIT 2: they are also the interplanetary police force for MC1's off-world colonies.