Just like any functional large and powerful organization, the Shadowgrave Clan had their law enforcement agencies.
And one of them were the Shadow Enforcers.
The Shadow Enforcers were mainly made up of Year 3 Initiates or graduates of the academy who became Shadow Blades and wanted to earn some money.
They were all experienced, battle hardened, and powerful individuals.
Even if one was Minor Archfiend with a Supreme Common Bloodline or a Minor Noble Bloodline, Simon would not look down on such an individual and neither would he treat them with levity.
The Shadow Enforcers were all shadow users, and the moment Simon sensed through Shadow Sense that a presence was in his shadow which emitted no killing intent, he instantly guessed that it was a Shadow Enforcer.
After all, the commotion he and Red Fang were causing was a lot, and somebody must have definitely reported it. Especially after Red Fang began to use his chaos.
