The most UNPOPULAR faction in Heroes 5.

By the way, the retaliatory attack of the Devils was removed in the fourth game. Actually, it's not that Inferno was nerfed in the fifth part; they are VERY strong in attack, but almost zero in defense, so you need to play with them very carefully and thoughtfully... sometimes you just get tired of calculating everything, and - huge losses. Another advantage is the very good special ability of the Demon hero.