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Quote1 Think of it, people! If he's an Asgardian, the same could be true for us! We could be gods, people! Gods! So let's start acting like them! Strike now for honor! For glory! For Asgard! Quote2

Lady Sif is a beautiful warrior-goddess of the Vanir. Heimdall, her brother, was the sentinel of Asgard's Rainbow Bridge, which connected Asgard and Midgard, the mortal realm.


When Sif was a child, she possessed long golden hair. She often played with young Thor, Odin's son, and Loki, Thor's adopted brother. Sif and Thor fell in love while they were quite young. When she was kidnapped by Storm Giants and made a prisoner of Hela, Thor offered his own life to ensure her release. Hela, impressed by his nobility, released both of them.[20] Later, the jealous Loki cut off all of Sif's golden hair while she was asleep.[21]

Guessing that Loki had something to do with Sif's loss of hair, Thor angrily demanded that Loki restore her golden locks. The scared Loki contacted two dwarfish craftsmen, Brokk and Eitri (who would later create Thor's hammer Mjolnir), and asked them to create new hair for Sif. Loki was either unable, or unwilling, to pay the dwarfs enough gold to create golden hair. The dwarfs decided that "for the price of naught" they would make "strands of naught." The dwarfs created magical strands of hair from the blackness of the night. The strands of darkness took root the moment they were placed on Sif's head, and then began to grow out. Thor found that Sif's new black tresses made her even more attractive, disrupting Loki's plan to ruin their relationship.[22]

For a time, Thor and Sif had a falling out. Many years later, Thor began his career as a superhero on Earth, and had a long-time love affair with the mortal Jane Foster. After this, however, Odin arranged for Thor to meet the now adult warrior-goddess, Sif. They became close companions and fell in love again. They promised to someday marry each other.[23]

Unfortunately, Thor's feelings of responsibility to the Earth and its people often came between the two lovers. In the past, Sif tried to adjust to living on the mundane Earth. Unfortunately, Sif preferred the majesty of Asgard.

At one point, Thor's former mortal lover, Jane Foster, was dying, and Sif merged her life force with Foster's, reviving the dying woman. Sif did this partially so that she could try to understand Thor's attraction to mortals, especially Jane Foster.[24] Soon afterward, Foster was separated from Sif, when Foster was exiled to a limbo-realm called the Runestaff of the Possessor. Sif and Thor eventually rescued Jane Foster and reunited her with her mortal love, Keith Kincaid.[25]

Thor and Sif later came to the aid of the alien champion, Beta Ray Bill, who was the guardian of a large space fleet that carried the surviving members of his alien race in suspended animation. Sif, Beta Ray Bill, and Thor drove off a horde of Surtur's demons that were attacking Bill's fleet. Beta Ray Bill and Sif found themselves attracted to each other while the war with Surtur raged on.

In a final climactic battle with Surtur, Thor, Loki, and Odin defended Asgard. Meanwhile, the Ancient Casket of Winters had been opened on Earth. The warriors of Asgard, led by Sif and Bill, protected Earth from Surtur's demons and the renegade Dark Elves working with Surtur. Surtur and his forces were defeated on Asgard and Earth.[26]

Before returning to Asgard, Bill and Sif spent some time together on Earth. Once back in Asgard, Sif and Bill defeated the Titanium Man, the Russian villain, who was leading a group of disgruntled American war veterans wearing the Credit Card Soldier armored battle-suits.[27]

During this time, Thor had fallen under an enchantment that caused him to fall in love with the Asgardian Lorelei. Thor and Sif eventually grew further apart because of this, as due to Lorelei's spell, Thor had to abide by everything she asked, and she commanded him to strike Sif, who did not realise it wasn't him.[28]

Sif and Bill eventually returned to Earth. Sif finally came to forgive Thor, after realizing that Lorelei was to blame for Thor's brutality. Sif was also impressed by Thor's heroism when he entered Hela's realm to rescue some mortals' souls stolen by the death goddess. This also caused Sif to accept Thor's guardianship of Earth and Asgard.[29]

When the Egyptian death god, Seth, attacked Asgard, Sif fought along with the other brave Asgardian warriors. During the battle, Leir, the Celtic god of Lightning, saw Sif and developed an attraction for her.[30]

Later, when the Ice Giant Ymir attacked Asgard, Leir arrived in Asgard planning to ask Sif to marry him. A worried Sif agreed, once two conditions were fulfilled. The first condition was that Leir help her find Thor and bring him back to Asgard. Leir agreed and they traveled to Earth in search of Thor. The trail led from Earth to the Black Galaxy, where they finally found Thor. Leir got them back to Asgard in time to witness the final battle between Ymir and Surtur, which heralded Ragnarok.[31]

Thor and Odin were able to permanently postpone Ragnarok, saving the universe. Leir then had to face Sif's second condition: to defeat Sif's chosen champion in battle. Thinking that Sif would ask Thor to be her champion, Leir was stunned when Sif acted as her own champion and easily bested the arrogant Leir.[32]

Since then, Thor and Sif continued their close relationship.

For a time, when Odin rested in the Odinsleep after his battles with the Dark Gods and Mangog, he declared Sif regent of Asgard in his stead.[33]

During Ragnarok, Sif died in battle against Thor's enemies, who possessed weapons that were forged in the same way as Mjolnir.[34]


When Thor was revived and began awakening the Asgardians, Sif's absence was notable. Hoping to find her, Donald Blake, briefly separated from Thor, sought out Jane Foster in New York City to see if she was again housing Sif's spirit. Finding Jane to be lacking Sif's spirit, Donald left the hospital where she worked, little realizing that one of the patients there was actually Sif, being held hostage in the body of an old woman named Mrs. Chambers who was suffering from what was thought to be terminal cancer in that hospital. Loki was reborn in the female body that was originally meant to be for Sif. When Loki discovered where she was, Loki gave her a mirror that showed Sif her true form, but she was unable to let anyone know who she was.[35]

Sif remained in the hospital inside her host, fighting to stay alive. When he could not find Sif, Thor began to wonder what would happen to the spirit of an Asgardian if their host died.[35] Loki later revealed to Thor Sif's spirit was too weak to answer Thor's original summons to the Asgardians and when Loki was in the process of transferring his soul from her current female form to his true male form, the process would kill Sif's host, and he should say goodbye to her.[36]

Upon learning the truth from Mrs. Chambers, Jane Foster called Donald Blake and informed him that she had found Sif, with Thor successfully being able to restore Sif mere moments before Mrs. Chamber dies. With Sif resurrected, Mrs. Chambers passed away.[37]

Sif later joined Thor in exile in Oklahoma and checked into the same hotel as Donald Blake under the name Sylvan.[38] She was seen fighting alongside the Asgardians during the Siege.[39]

Return of the Serpent[]

When Odin sensed that the Serpent had returned, he hastily ordered all Asgardians to return to Asgard (The 'true' one rather than the ruins after Siege). When Thor fought back against the All-Father, she could only watch in shock as the Thunderer was defeated and taken to the realm in chains.[40]

When Loki freed Thor (believing Odin is going too far to destroy the Serpent), Sif along with the Warriors Three, Balder and Hermod offered to take him back to Midgard to aid the Avengers, but not before Odin noticed what was going on. However, Thor managed to convince him to save Earth, and the All-Father promptly sent him there. But Odin gave Thor a warning; his time limit was up to the point where Dark Asgard would rise. With that, Odin promptly sent him to Midgard, even tossing him Mjolnir (which the All-Father had previously confiscated).[41]

Asgard's Change[]

When Asgard was restored as Asgardia, Sif watched Tanarus rescue a worker that almost fell to his death.[42] Like the rest of the universe however, she had forgotten who Thor was, until Karnilla and Ulik's spell was broken.[43]

The Mighty Thor[]

Sif was part of the list of women Odinson suspected to be the new Thor.[44] She was one of the many women warriors (Asgardians and Avengers alike) Odinson and Freyja brought to help Thor in her fight against Cul Borson, as he commanded the Destroyer armor under Odin's order.[45] They fought him off until Odin aborted Cul's mission.[46]

War of the Realms[]

When Malekith and his Dark Council attacked Midgard, Sif and the other Asgardians tried to fight off the invasion.[47] She along with Captain Marvel formed the War Avengers set out to battle various horde of enemies around Midgard.[48]

The New Guardian of the Bifrost[]

Following the death of her brother, Sif took his job as the Guardian of the Bifrost.[1] When Thor joined Galactus in his battle against the Black Winter by helping the cosmic being consuming a number of planets, Sif assisted Thor in his mission.[49] However, when Beta Ray Bill tried to stop Thor, thinking that the God of Thunder and Galactus were destroying planets for no reason, Thor destroyed Bill's Stormbreaker and was about to kill Bill, until Sif intervened.[50] Thor tried to order Sif to step aside, but she refused prompting the Herald of Thunder to attack her with Mjolnir, but Sif used the Bifrost to transport the hammer to Jotunheim. She told Thor that he was forgetting who he was and that he was afraid. After that she and Bill went to Asgard.[51]


Power Grid[58]
:Category:Power Grid/Fighting Skills/Master: Single Form of Combat:Category:Power Grid/Energy Projection/None:Category:Power Grid/Durability/Enhanced:Category:Power Grid/Speed/Warp:Category:Power Grid/Speed/Normal:Category:Power Grid/Strength/Superhuman (25-75 ton):Category:Power Grid/Intelligence/Normal


Asgardian Physiology: Sif likely possesses all of the various superhuman attributes common among the Asgardians.

  • Superhuman Strength: Like all Asgardians, Sif is superhumanly strong and possesses greater physical strength than the average Asgardian female. At her peak, Sif is able to lift about 30 tons.[citation needed]
  • Superhuman Speed: Sif is capable of running and moving at speeds much greater than that of even the finest human athlete.[citation needed]
  • Superhuman Agility: Sif's agility, balance, and bodily coordination are enhanced to levels beyond the natural physical limits of the finest human athlete.[citation needed]
  • Superhuman Reflexes: Sif's reflexes are similarly enhanced and are superior to those of the finest human athlete.[citation needed]
  • Superhuman Stamina: Sif's musculature produces considerably less fatigue toxins during physical activity than the musculature of a human being. She can exert herself at peak capacity for about 24 hours before fatigue begins to impair her.[citation needed]
  • Superhuman Durability: Sif's body is much more resistant to physical harm than the body of a human being. She is capable of withstanding great impact forces, exposure to temperature and pressure extremes, powerful energy blasts, and high calibre bullets without sustaining injury.[citation needed]
  • Superhumanly Dense Tissue: Sif's bodily tissues have about 3 times the density as the bodily tissue of a human. As a result, Sif is actually much heavier than she appears. This increased tissue density also contributes somewhat to her physical strength.[citation needed]
  • Superhuman Longevity: Like all Asgardians, Sif ages at a rate that is much slower than that of a human being. However, Asgardians aren't completely immune to ageing, as some other god pantheons are.[citation needed]
  • Regeneration: Despite her body's resistance, Sif can be injured like any other Asgardian. However, her metabolism enables her to rapidly regenerate damaged bodily tissue with greater speed and efficiency than a human being is capable of. Injuries such as slashes and punctures can fully heal within hours, whereas broken bones can heal within a few days. However, she isn't able to regenerate severed limbs or missing organs. The extent of her ability heal appears to have limits, as she does possess various scars from previous battles.[citation needed]

Teleportation: Sif has, by birthright, the power to transverse time and space, and travel faster than the speed of thought by piercing the fabrics of Infinity and travel to any destination she chooses.[52][13][53] Sif can also use her enchanted sword to teleport herself to other dimensions beside Earth and Asgard.[54][55]

Retrocognition: Sif was able to see past events that had happened before, like seeing a battle that happened between a young boy Thor and a Rock Troll.[56]


Sif is a formidable combatant and has received extensive training in unarmed combat and swordsmanship. Among Asgardian women, her fighting ability is second only to Brunnhilde the Valkyrie.

Allspeak: Thanks to the Allspeak Asgardians can communicate in all of the languages of the Nine Realms, Earth's dialects, and various alien languages.



Sif wields a special sword enchanted by Odin to enable her to cleave passageways between dimensions, primarily between Asgard and Earth, by a special pattern of swinging motions. Also, during Ragnarok she used the sword Dragonfang after Valkyrie (Brunnhilde) was slain. After the death of her brother Sif inherited her brother's sword, Hofund, and took his job.[1]


  • The general populace of Earth is unaware of Sif except as a mythological character.


  • Little of Norse mythology has survived, and what remains is subject to speculation by academics. However, some information about Sif is known. She is a goddess connected to the Earth and the wife of Thor, by whom she has a daughter named Thrud. She also has a son Ullr by an unknown father, and she has two stepsons named Magni and Modi. She is distinctively and indisputably blonde in the remaining original texts.

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