The thing about noble knights is their versatility. They're king is basically a wall that can't be destroyed once per turn, gains 500 life points per turn, and can't be targeted. He can be tributed with volcanic queen, weakened by spells or fusions, or straight out pummeled to death assuming he has no xyz materials. The normal knights are weaker on their own but with their queen they can simply destroy bigger foes assuming they turn dark. Noble Knights are deadly but if you lock them down they have no chance with no chance of using their arms then they're pretty screwed. It's just that Noble knight King Artorgius is literally a wall of destruction. They're not overpowered by any means they're just really good but not comparable to some of the meta today like Kozmo or pendulum.

Also I plan on adding a younger brother to my main character who uses an archfiend (not necessarily red dragon archfiend, the fiend type monsters) beatdown deck that's high risk high reward if that's fine with you.