noctalis.com :: Heroes of Might and Magic V :: Heroes

Demon Lords
Agrael	Aura of Swiftness	The initiative of all creatures in hero's army is increased by 1% per hero level.
Agrael rose rapidly through the ranks of Demon cultists to become a trusted right hand of the Demon Sovereign. His detractors call him reckless and over-ambitious, but Agrael's measured aggressiveness has made him a feared and respected leader in battle. He will attack when a good opportunity presents itself, and does not hesitate to take risks when the rewards are commensurate.
Biara

Sovereign

Grok	Rusher	Hero's movement points are increased by 5% instantly and by +1% every four levels. The cost of Teleport spell is reduced by half.
Grok's promotion as the Sovereign's "go-fer" was due to two things: his innate indefatigability and the Sovereign's love for massacre. He is his master's bloody entertainments manager, driving all manner of game and beings before Kha-Beleth to be slaughtered. The Sovereign knows that if there is a matter that must be handled quickly, there is no better fiend for it than the slavishly obedient and mindlessly brutal Grok.
Alastor	Mindreaver	The Curse of Confusion spell has an additional effect of decreasing target's mana on one point per every hero level.
Alastor showed his skill at mind control at a tender age, as his childhood enemies took to wandering inexplicably into lava flows. Delighted by this precocious display of talent, the Sovereign permitted Alastor to study the arts of mental domination under the masters in Sheogh and later across all the lands of Ashan. Many a time have enemy troops, mesmerized by his gaze, come over to fight at the demons' side.
Nebiros	Chosen of Chaos	Luck of all hero's troops is increased by 1. Also, enemy hero can not use Tactics ability in combat.
Though Nebiros has seen more hours in battle than any other being from the depths of Sheogh, he owes his success more to his own luck and unpredictability. Ruined enemies complain that the powers of Chaos itself are on his side, bending fortune to fit his needs. Having killed his way up from a lowly slave to be one of the great powers in Sheogh, it is certain that Nebiros benefits from the cursed blessings of Urgash.
Marbas	Spellbreaker	All creatures in hero's army gain 5% Magic Resistance and + 1% per hero level.
Marbas has been the iron-fisted leader of the demon cult in the Silver Cities for many years. Hated by the renegade Mages he dominates, Marbas studied deeply in their arts out of both curiosity and self-preservation - should his underlings turn against him, Marbas wanted to be able to defend himself. He is second only to the Demon Sovereign in his ability to withstand the use of magics.
Nymus	Gate Keeper	The number of creatures called through the Gating increases by 1% per hero level.
After witnessing the massacre of King Alexei and his knights first-hand during the War of the Eclipse, Nymus decided that overpowering tactics are the key to victory. As a result he has spent much of his existence researching the Infernal Gates and has achieved striking results: the troops he summons arrive much more quickly than they do for other Demonlords.
Deleb	Iron Maiden	Ballista's shots under hero's command achieves fireball effect. Spell power of this fireball increases by +1 for every four hero's level.
One of the generals charged to refit Kha-Beleth's prison to better suit his own needs, the demoness Deleb developed an intricate knowledge of machines. Nicknamed "Meat Grinder" by her detractors, Deleb puts unquestioning faith in her own engines of war rather than trusting to fickle Demon troops, whose loyalty is a constant balance between terror of their masters and terror for their lives.
Grawl	Hound Master	All Hell Hounds and Cerberi in hero's army gain +1 to their attack and defense every two levels of the hero, starting on first level.
Wherever Grawl goes he is always accompanied by a baying, slavering pack of Hellhounds or Cerberi. These creatures are the only things for which Grawl has any sympathy, and he protects them as if they were family. Some dare to snicker that they are indeed relatives, though anyone who dares to attack or even mock Grawl will find himself torn apart by the razor-sharp fangs of his devoted beasts.
Jezebeth	Temptress	All Succubi and Succubus Mistress in hero's army gain +1 to their attack and defense for every two levels of the hero, starting on first level.
Jezebeth is rightfully proud that she has achieved her high standing in the Demon ranks thanks to her temptress' talents. Worshipping her as a shining example, Jezebeth's Succubus followers strive to equal her ability to seduce and murder for the glory of their Sovereign.
Guarg
Some brave men, who are dead now, used to say that Guarg is "not entirely demon". Anyone who will make a look in his eyes with stretched out pupils can decide this. But it is better not to say it aloud - Guarg can cruelly punish the offender depriving him of his magical power.