I suggest we discuss this topic. In my experience, this is one of the weakest Castles. Here's my opinion on the creatures:
Imps are terrible. They don't play a significant role due to their weakness.
Magogs aren't the best, and the upgraded ones are questionable because of their ability to harm their own.
Cerberuses are a strong unit! They have good growth, hit hard, and attack frequently without retaliation.
Demons are just ordinary, expendable units without any particular advantages.
Pit Lords have low health, can't fly, and their special ability seems questionable to me (one piece of meat resurrects another piece of meat -)))
Ifrits are good guys! They can be considered among the top three strongest level 6 units, along with Nagas and Death Knights (I consider Cavaliers weaker, but that's just my opinion).
Devils are decent fighters, but I think they have too little health.
The heroes in Inferno don't stand out in any particular way, but I repeat, I don't like this Castle, and maybe I just don't know much about it -))))
...that's why I created this topic.

I completely agree; the Castle is weak. I don't know how to play with it, but I do understand some things. I'll share some of my thoughts.
I like Magogs; it's easy to avoid their attacks if you plan everything out carefully.
Pit Lords are good in attack (as are Ifrits). If you protect them and send them into attacks where they won't be retaliated against, and then retreat, they are invaluable (and they also resurrect other units :D).
Ifrits are good in attack... also... in general, the whole Castle is focused on a good attack, a powerful, fast, and irreversible attack. This is the only key to victory (maybe that's why I don't like it; I prefer counterattacks :D).
In the fifth game, this feature (with fast attacks) was brought to perfection, with the ability to summon units on the battlefield!!!!
In short, if you don't know how to attack quickly, don't play with this Castle; that's why I don't play with it.
P.S. To be honest, I like Cavaliers much more than Death Knights (even though I'm a Death Knight myself!!!!) Despite the fact that their stats are worse than those of Death Knights, they attack more powerfully, and that's more important to me)