She has also battled alongside Balder, who has developed an unrequited attraction to her, as she never shows affection for anyone but Thor and certain individuals who have proved worthy to wield his hammer, Mjolnir, such as the noble alien warrior Beta Ray Bill, and the mortal Eric Masterson.

[3] The character went on to make guest appearances in several series including The Avengers, Fantastic Four, The New Mutants, Silver Surfer and Thunderstrike.

In June 2010, Sif starred in a self-titled one-shot by writer Kelly Sue DeConnick and artist Ryan Stegman.

The issue deals with the aftermath of Loki having taken control of her body and her consciousness being forced into the frame of a dying elderly woman.

"[4] Beginning with issue #646 (November 2012), Journey into Mystery by Kathryn Immonen and Valerio Schiti shifted focus from Loki to Sif.

To be truthful, the real challenge that we inherited with this book was living up to the beautiful work that Kieron [Gillen] et al. had done previously and the amazing reader energy that had been generated.

As it is, I'm so proud of what Valerio, Jordie [Bellaire], Clayton [Cowles], Pepe and I put on the page under Lauren [Sankovitch] and Jake's fearless leadership.

At one point a giant gave her to the death goddess Hela in exchange for immortality, but Thor saved her by offering himself in her place.

[12] Reunited with Thor, Sif accompanies him into battle against many of his most formidable enemies including Ulik,[12][13] the Enchanters Three,[14] the Circus of Crime,[15] Wrecker,[16] Mangog,[17] Pluto,[18] and Surtur.

After Hogun attempts a physical attack, Sif puts herself in the line of fire and convinces Loki if he dies, he would have to kill her too.

[20] Sif is one of the Asgardians who encounter Tana Nile, leading to a series of adventures with her that gets them exiled from Asgard for a time, but they eventually return home.

Despite this, Sif risks her life to travel to the realm of Mephisto to free what seems to be the soul of Thor from a mystical bag, pledging her loyalty to the demonic entity.

She is manipulated into a new costume change and is sent to face down Eric and Balder in battle, who had willingly followed her, worried for the success of her mission.

[30] When Thor assumes the throne of Asgard following Odin's death, he becomes torn between his duties as king and his desire to keep mortals from harm.

As an adult seeking understanding of these events, Magni finds Sif, who influences him to rise up against his father even though she still loves him.

[33] After the timeline is reset, Loki brings about Ragnarök in Asgard, during which the godly forces swiftly lose ground.

Loki has masked her from Thor's abilities, giving her a mirror that shows Sif her true form but prevents her from revealing her identity.

Chambers, Jane Foster calls Donald Blake and informs him that she has found Sif, and Thor succeeds in restoring her.

[41][42] Sif then joins Thor in exile in Broxton, Oklahoma and checks into the same hotel as Donald Blake under the name Sylvan.

[13] At some point, Sif began relying on her enchanted sword, which could "cleave" open gateways to other destinations besides Earth and Asgard through a complex array of swinging motions.

In the alternate Earth X reality, the Asgardians were actually aliens that were manipulated by the Celestials into believing they were the Gods of Norse myth.

[57][58][59] Sif appears in media set in the Marvel Cinematic Universe (MCU), portrayed by Jaimie Alexander.