Sif (Earth-513)

Early life
Sif, Heimdall's sister, has been Thor's constant companion since childhood. Like most Asgardians, Sif was born with golden hair. Hers was turned black after Loki cut it and replaced it with enchanted hair made by dwarves. At an early age she showed great prowess as a warrior and was considered the best female warrior in all of Asgard. 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. Hela was so impressed that she let them both go.

Growing up with Thor and Loki and fighting alongside The Warriors Three allowed her to develop her strong willpower and character.

She followed Fandral and Thor to Midgard after Amora and Lorelei had been causing trouble there.

Sif fell for Thor while they were quite young, but only now admitted her feelings.

Powers and abilities
The extent of her ability heal appears to have limits, as she does possess various scars from previous battles.
 * Asgardian Physiology: Sif possesses all of the various superhuman attributes common among the Asgardians, that is superhuman strength, speed, stamina, durability, dense tissue.
 * Also, like all Asgardians, Sif ages at a rate that is much slower than that of a human being
 * Regenerative Healing Factor: 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.
 * Instant 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. Sif can also use her enchanted sword to teleport herself to other dimensions beside Earth and Asgard.


 * Sif is a formidable combatant and has recieved extensive training in unarmed combat and is proficient in use of cold weapons, favoring a sword and shield in battle. 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.