Inevitable, Kolyarut:
In 3e, Modrons were (originally) deemed too silly to inhabit the plane of Mechanus and were replaced by the way cooler Inevitables.
The Marut were the only ones that already existed in earlier editions and were now considered Inevitables.
Each kind of Inevitables have a different type of infringements against order that they are tasked to punish.
Kolyaruts represent the ultimate enforcement clause in a contract. They mete out punishment to those who break bargins and oaths.

In 3e, Modrons were (originally) deemed too silly to inhabit the plane of Mechanus and were replaced by the way cooler Inevitables.
The Marut were the only ones that already existed in earlier editions and were now considered Inevitables.
Each kind of Inevitables have a different type of infringements against order that they are tasked to punish.
Kolyaruts represent the ultimate enforcement clause in a contract. They mete out punishment to those who break bargins and oaths.