NHF – new heroes for Heroes V 3.1.

An upgraded version of Orcish Warriors from the NCF mega-pack.
I don't remember their exact stats, but I do remember that they have a speed of 7 and the abilities "Mana Drain" and "Demon".
Their advantages over Fire Demons are obvious: they belong to the Orcs faction, and they can be converted into another upgrade if needed.

Will Kujin definitely have a bonus for them? Maybe her special ability works based on ID, not the "Demon" characteristic.

Added after 51 minutes
Here's what I was thinking: it would be more interesting for the player to choose a hero based on the expected duration of the game, rather than balancing all heroes for any map. This balance affects a very interesting aspect of the game. What do you think?

Added after 14 minutes
Shagrat:
1) 100 200 400 800 1600...(x2: +1, +2, +3, +4, +5 [relative to the beginning]...).
Kuber:
1) 2 8 104 (weekly, monthly, and annual increases)
2) 10 30 90 270 ...(x3)

Added after 12 minutes

Kujin is a demon hunter. When demons are present in battle, her rage increases by 2x.

Her parameter doesn't seem to change.