Durotan, son of Garad and Geyah, was the chieftain of the Frostwolf clan, mate of Draka and father of the future Warchief Thrall. He was also a contemporary of Orgrim Doomhammer.
Young Durotan saw Draka after she was born and his mother Geyah told him to bless Draka. He did so but noticed that she was ill.
From the three brothers, Ga'nar and Fenris, Durotan was the one who embraced family and tradition most. Durotan became the heir of the Frostwolf clan, when Fenris vanished and Garad chose Durotan instead of hot-headed Ga'nar, in the years prior to the rise of the Horde.
During a Kosh'harg festival in Nagrand, he met a Blackrock orc named Orgrim, son of Telkar Doomhammer, and the two became fast friends despite belonging to different clans.
While racing each other through Terokkar Forest, Durotan and Orgrim were attacked by a rampaging ogre, and would have been killed if not for the timely arrival of a draenei hunting party from Telmor, led by Restalaan. Sending word to their clans, Restalaan took the two orcs to Telmor, and informed them that the draenei leader, Prophet Velen, was in the town and invited the two to dinner. They discussed their people's histories, Durotan even commenting that he and Orgrim had learned more about the draenei in that period than their entire race had in over a century.
Afterwards, he participated his om'riggor. He was also brought to the "sacred mountain" of Oshu'gun by request of Tal'kraa, seeking to test whether he could become a shaman as well as chieftain of his clan; alas, he did not see the ancestors, though he knew they were there somehow.
Some time later, Durotan met Draka once more after she had overcome her illness. Durotan was smitten at first sight, not believing that she could be a member of his clan. Though rebuffed when asking her to join him on a courtship hunt, the two eventually mated.
Long before the opening of the Dark Portal, the Frostwolf clan would hunt clefthoof and move their location. One time, his mother was bitten by a drift lurker which caused her to enter a coma. While his brother Ga'nar wanted to leave her die a natural death and move the clan out of area, Durotan couldn't do that. After Ga'nar left, he and Geyah's companion, Stormfang remained with her and tended to her. At some point a lone garn attacked them but the two killed the beast. Durotan knew that a whole pack will attack soon so he prepared for the battle. When they attacked he lost control over his anger and fell to bloodlust. While he killed everything that moved, Geyah awoke. After hearing her, he focused once more and found out that he killed Stormfang too. It is said that since that day, he wore Stormfang's fur to the end of his days as a reminder of a loyalty and of a threat of savagery.
Some time later, Durotan's father Garad was killed in battle against a group of ogres and a gronn, and Durotan became the chieftain of the Frostwolf Clan by hereditary right. It was not long after this that Ner'zhul, the spiritual leader of the orcs and chieftain of the Shadowmoon Clan, called the clan chieftains and shaman to Oshu'gun. Ner'zhul told them what he believed the ancestors revealed to him - that the draenei were enemies of the orcish people. This was part of an elaborate scheme concocted by the eredar lord Kil'jaeden, one of the lieutenants of the Dark Titan Sargeras. Kil'jaeden had led the Burning Legion in a hunt for the draenei - renegade eredar who fled when Sargeras came - over the eons, but in the past had found only remnants of where they had been.
Durotan was dispatched by Ner'zhul to meet with a party led by Velen himself near Oshu'gun, where the Prophet revealed that what guided the spirits of the ancestors there was in fact a dying naaru named K'ure, who had aided the draenei escape from Argus 25,000 years earlier. This was met by suspicion and outright hostility by the orcs - particularly Drek'Thar, the Frostwolf clan shaman, who called Velen a blasphemer. Despite orders to bring the Prophet and his party to Ner'zhul, Durotan decided to release them, reasoning that there was no honor in taking a willing prisoner.
During a battle in which they were defeated by Restalaan's forces, the Frostwolf shaman realized they had been cut off from the spirits. Durotan and Draka took this as a sign that something was seriously wrong, even though Ner'zhul had told them the ancestors had told them that this was a just war. It was at this time that the orcs - under the guidance of the ambitious Gul'dan, Ner'zhul's apprentice - began to take the path of warlock magic. Durotan, not seeking to bring attention to himself by opposing the official stance, allowed Drek'Thar and his shaman to receive the warlock training.
Through Gul'dan's manipulation - empowered by Kil'jaeden - the clans were united into the Old Horde, and several clan chieftains, including Durotan, ran for the position of Warchief. However, the clear favorite was the battle-hungry Blackhand, chieftain of the Blackrock Clan. No one knew, of course, that Blackhand was in fact Gul'dan's puppet.
With information given to him by Orgrim, Blackhand ordered Durotan to assault the city of Telmor, which was close to the Frostwolf clan grounds. While in Restalaan's care as a boy, Durotan had seen the guard captain pull a green crystal from a hidden place in the forest floor - Leafshadow, one of the shards of the ata'mal crystal, which projected an illusion that hid the city from ogres, gronn and other external threats. Orgrim had told Blackhand that Durotan possessed a keen ability of recall, and could remember the incantation to dispel the illusion. Durotan reluctantly did so, and thus the Horde sacked Telmor and killed everyone they could find, including Restalaan, who was defeated by Durotan himself.
Shortly before the attack on the draenei capital of Shattrath, Gul'dan called the clans to a mountain he named the Throne of Kil'jaeden in what is now Hellfire Peninsula, to partake of Kil'jaeden's "gift" - the blood of Mannoroth. Durotan - having been warned by the now-subservient Ner'zhul - refused to partake, as did his friend Orgrim... causing both to fall under the suspicion of Gul'dan.
After the fall of Shattrath and the disappearance of Kil'jaeden, the Horde turned on itself, with no enemies left to fight. It was at this time that Gul'dan was visited in his dreams by the human sorcerer Medivh, who was possessed by the Dark Titan. Medivh commanded Gul'dan to construct a gateway, and that together they would open a great Portal between Draenor and the world of Medivh. Durotan continued to voice opposition against the Horde leadership during this time, publicly questioning Gul'dan's motives and protesting against the use of fel magic. Despite his disgust with the Horde's leadership, he had brought his people through the Dark Portal for there was no future on Draenor; only on Azeroth could they survive another generation.
Before leaving Draenor, Durotan and Draka visited Geyah. Draka told her she was pregnant and Durotan added that he would be named as Go'el.
The Frostwolves initially fought against the humans alongside the other clans, but their destiny did lie with the Horde. Gul'dan later confronted Durotan in secret. The warlock told him that his clan was no longer part of the Horde and that the Frostwolves had to leave the Black Morass immediately. If they ever returned, if they ever contacted any member of the Horde, Gul'dan promised to destroy every Frostwolf male, female, and child. Durotan was loath to part from his fellow orcs, but he had just learned that his mate, Draka, was pregnant. He did not want to risk her, or their unborn child, by testing Gul'dan. And he knew why Gul'dan was letting them live for if Durotan were killed, it would make him a martyr and give his warning weight among the rest of the Horde.
Apparently accepting their fate, Durotan and the Frostwolf clan settled deep in a hidden valley in the Alterac Mountains, far to the north of the Kingdom of Azeroth. While there, Drek'Thar had forsaken the path of the warlock and was able to regain the favor of the spirits, and return to shamanism. His aid would be invaluable in surviving in the harsh lands which the Frostwolves now called home; in addition to ensuring that the encampment was not flooded in the spring thaw, they also befriended the white wolves that made the valley their home. In the year ,Draka, Durotan's mate and most stalwart supporter, gave birth to Durotan's son and heir, the orc who would become known as Thrall. Realizing that there was far more at stake now that his legacy would live on, Durotan decided to take action against the evil Gul'dan, and made a meeting with the only other orc who had stood by him: Orgrim Doomhammer.
Durotan explained what he knew - about Gul'dan, the Shadow Council, the demonic bargain and Orgrim decided it was time to stop the evil warlock. He urged Durotan and Draka to take shelter in the north until he sent word to them. Orgrim commanded his guards to accompany the Frostwolves on their journey home and keep them safe. That would be a mistake that Orgrim would regret to his dying day. His guards were not loyal to him, but to the Shadow Council.
The guards had heard every word between Orgrim and his visitors. They decided they didn't need Gul'dan's permission to eliminate the Frostwolves - clearly he would want Durotan, Draka, and their child dead. After traveling north for several days, the guards fell upon Durotan and Draka. The Frostwolves fought bitterly against their attackers, killing one of them. But the remaining guards struck down Durotan and Draka, and Go'el was left to die in the frigid cold.
With his arms sliced off to prevent him from holding his child again, Durotan died slowly as the lifeblood drained out of him, the last thought in his mind being a sense of relief that he would not see his son torn apart by the creatures of the forest.
And he is reprised by Toby Kebbell in the English dub and his Japanese voice is unknown.