The Necromancer's Path.

I downloaded this map and let my brother play it. Being a very clever person, he activated cheats (created an army for himself, removed enemy heroes, and one of the outposts and the city of Giovanni) and generally had as much fun as he could. When he entered Benedict's lands, I came to watch how the map was progressing, and we saw some strange black creatures of level 8 from the city on the tents, resembling dungeon lords. I don't remember all the characteristics and the name (and I even forgot to take a screenshot of them), but I remember that they had 15k HP, more than 100 attack and defense, 7 speed, 25 initiative, magic immunity, and infinite retaliation. Going into the map editor out of curiosity, I concluded that Servants of Justice (level 6 knights who cast Earth Shock and have double strike) should have been in their place. I'm curious, is this a bug or a consequence of using cheats? There is a photo of this creature on the map, it is attached.