Heimdall

"Be warned, I shall uphold my sacred oath to protect this realm as its gatekeeper. If your return threatens the safety of Asgard, Bifrost will remain closed and you will be left to perish on the cold waste of Jotunheim."

- Heimdall

Heimdall is the all-seeing and hearing Asgardian and guard of the Bifrost Bridge. He can see and hear nearly everything that happens in the Nine Realms. He is the current guardian of the Tesseract.

Early life
Heimdall is an Asgardian blessed with sensory capabilities far beyond those of other Asgardians, letting him see nearly all things that happen in the Nine Realms. His near omniscience have been put to use placing Heimdall in the role of gatekeeper to Asgard at his observatory on the Bifrost Bridge.

Thor's Coronation
"Heimdall, may we pass?"

- Thor



Despite his phenomenal ability however, Heimdall was unable to perceive an intrusion by several Frost Giants when they broke into the vaults of Odin. This same intrusion also sparked the ire of Odin's son Thor, who came to Heimdall, with several of his friends, seeking access to Jotunheim. Heimdall agreed to let them pass and accepted their request that he keep their movements secret.

Loki Takes the Throne
"Complicated fellow, isn't he?"

- Fandral

Later, with Thor banished and Odin fell into his Odinsleep, Loki placed himself on the throne as regent and demanded Heimdall's loyalty. Although he grudgingly accepted, Heimdall opted to only observe a literal interpretation of his vow to Loki and did not interfere when Sif and the Warriors Three used the Bifrost Bridge to reach Thor. Enraged, Loki dismissed Heimdall as a subject, thus releasing the protector of the Bifrost from his vow. Heimdall responded with an immediate attack with Hofund, but Loki simply froze him in a block of ice with the Casket of Ancient Winters before the blow could strike. Heimdall was still frozen when Loki brought several Frost Giants, including Laufey, through the Bifrost. Locked in his icy prison, he was helpless to prevent Loki leading one of them into the city, but he was soon galvanized by the calls of Thor who was still trapped on Earth. Smashing free, he quickly cut down two Frost Giants who had been left to guard, and opened the Bifrost for Thor and his friends. Severely weakened, Heimdall could assist the adventurers no further and had to be carried from his observatory. After he left, Thor defeated Loki in a duel, at the cost of the Bifrost Bridge. The destruction of the bridge created a portal that sent Loki to an unknown area in space. Heimdall returned following the destruction of the observatory and when Thor asked if passage to Earth was lost, he showed him the Bifrost regenerating and replied, "No. There is still hope." When Thor asked Heimdall if he could see Jane Foster, Heimdall chuckled and told him that she was still looking for him.

War Between Realms
"With the death of Laufey and Loki's attack on their world, the Frost Giants are a broken people... and yet they sense something has happened. The Troll Lords know it as well. For many millennia, they have coveted the Dwarven forges. Once they realize that Asgard cannot come to king Eitri's defense, they will strike. Despite their primitive nature, the Badoon feel our absence. Several of their clans have fallen into civil war. Their savagery and bloodlust will eventually spread from planet to planet unchanged. And the Marauders amass near Vanaheim. Thor's destruction of the Bifrost continues to shift the balance of power across the Nine Realms... and into the worlds beyond Yggdrasil."

- Heimdall With there being no way for the Asgardians to go to other Realms to help protect them, the other Realms of the universe fell into chaos. To keep the Asgardian leaders updated, Heimdall summoned Odin and Thor and warned them about the attacks. Thor, realizing that his friend Hogun would worry about his people in Vanaheim, chose to tell him about it. Thor asked Hogun to tell him if anything changes in the realms, especially Vanaheim.

Loki's Survival
Around a year after the Duel at the Bifrost Bridge, Frigga discovered Loki was in Chitauri Space. There, Loki was being trained by Thanos to rule Midgard. Soon Loki went to Midgard and started the War for Earth. With the Bifrost destroyed, Odin was forced to use dark energy to send Thor after Loki. With the help of the Avengers, Thor was able to arrest Loki and take him back to Asgard along with the Tesseract following the Battle of New York. Thor entrusted the Tesseract to Heimdall upon his return to Asgard. The all-seeing Asgardian then used it to repair the Bifrost Bridge.

Return of the Dark Elves
As Heimdall and Thor discussed Jane Foster, Heimdall lost track of her, causing Thor to travel to London to check on her. When Thor and Foster came across the Bifrost Bridge, Heimdall greeted them. Later, he witnessed as Fandral, Volstagg and the Einherjar returned from fighting the Marauders with their captives. Among the Marauders was Algrim.

Simultaneously, as Algrim was conducting a prison break of the Asgardian Dungeons, Heimdall observed something strange flying pass him. He left his post on the Bifrost Bridge and chased it down. It was the lead Dark Elf Harrow trying to invisibly pass him. After destroying the ship, Heimdall used Hofund to activate the shield around Asgard. After the funeral of Frigga, Odin decreed that the Bifrost be shut down. Not needing to guard his post, Heimdall went to console Thor. As they spoke, Thor asked Heimdall to side with him as he hid Jane Foster, who was carrying the Aether. When Odin was told by Tyr that the mortal woman was missing, Odin looked disappointingly at Heimdall.

Observation
Heimdall saw a Kree arrive on Earth and, because of the enmity between the races, alerted the King. Heimdall opened the Bifrost Bridge and Sif was sent to investigate.

After her assignment was completed, Sif called Heimdall to reopen the Bifrost so that she and the Kree Vin-Tak could go to Asgard.

Thor's Vision
To be added

Appearance and Traits
Heimdall is a strong and loyal warrior, with a high sense of honor. Although being extremely powerful, even for an Asgardian, he loyally serves Odin, having swore an oath of faith to his king. He was loyal enough to confess his disobedience (although he called it treachery) to Odin and surrendered.

Powers and Abilities
"Can you see her?" "Yes." "How is she?" "She searches for you."

- Thor and Heimdall

Like all Asgardians, he possesses superhuman physical attributes, such as strength, speed, stamina and reflexes, and he is an extremely powerful swordsman. He also has the power of nigh-omniscience, and his sight can extend itself to all Worlds (with Heimdall himself claiming to see 10 trillion souls from Asgard ), but his senses can be deceived, by both Loki and the Dark Elves.

Powers
Heimdall possesses various superhuman attributes common among Asgardians. Heimdall possesses superhuman strength, speed, agility, reflexes, durability, and is extremely long-lived.
 * Asgardian Physiology: As an Asgardian, Heimdall has superhuman abilities.
 * Superhuman Strength: Like all Asgardians, Heimdall is super-humanly strong and possesses greater physical strength than the average Asgardian male. Heimdall was able to destroy a Dark Elf Harrow using only his sword.
 * Superhuman Speed: Heimdall can move at extreme speeds. He managed to chase a Dark Elf Harrow, which can move extremely fast, and destroy it.
 * Superhuman Durability: Like all Asgardians, Heimdall's body is much more resistant to physical injury than the body of a human being. Heimdall was able to break through a block of ice generated by the Casket of Ancient Winters.
 * Regenerative Healing Factor: Despite his enhanced durability, Heimdall can be injured like any other Asgardian. However, his metabolism allows him 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 withing hours, whereas broken bones can heal within a few days. However, he is not able to regenerate severed limbs or missing organs.
 * Longevity: Like all Asgardians, Heimdall ages at a rate that is much slower than that of a human being. However, Asgardians aren't completely immune to aging, as he is several hundred years old by human standards.
 * Superhuman Senses: Heimdall possesses sensory capabilities far beyond that of any Asgardians, which made him the gatekeeper to Asgard. His sight itself extends itself to all of the Nine Realms, and his hearing is so precise that he heard the Warriors Three and Sif conspiring against Loki before he decided to passively help them. Heimdall was able to hear Thor call to him from Earth. Despite his phenomenal ability, however, his senses can be deceived by Loki and the Dark Elves.

Abilities

 * Master Combatant: Heimdall is a very capable combatant, having received training in swordsmanship. While normally using his sword to open the Bifrost Bridge, when using it in combat, Heimdall is powerful enough to defeat two Frost Giants when in a weakened state and defeat an entire Dark Elf Harrow with relative ease when at his prime.

Equipment

 * Hofund: Heimdall mainly uses his sword for opening the Bifrost Bridge, but the sword is also powerful enough to pierce the skin of a Frost Giant and the hull of a Dark Elven ship.
 * Armor
 * First Set: Heimdall’s original armor was a gold metal chest plate that extended into shoulder guards over simple brown clothing. He also had a golden horned helmet. He wore black pants and gold boots and arm-bracers.
 * Second Set: Heimdall’s second armor was far more ornate with an illustration of Yggdrasil on his chest plate. His sleeves are gold and brown leather. He wore a gold and brown skirt over brown pants and detailed golden boots. Heimdall still wears a helmet that is the same shape as the first one but with patterns etched onto it.

Allies

 * Thor
 * Sif
 * Warriors Three
 * Hogun
 * Fandral
 * Volstagg
 * Odin - King
 * Frigga † - Queen
 * Jane Foster

Enemies

 * Frost Giants
 * Laufey †
 * Loki - Former Ally and King turned Enemy
 * Dark Elves

Video Game Only

 * Fire Demons - Enemies

Trivia

 * In the comics, Heimdall and Sif are brother and sister. Although this relationship has not been explored in the movies, concept art exists portraying Sif as black, confirming that this relationship was originally propped for Thor.
 * In, Heimdall guarded the Bifrost, which the Vikings believed rainbows came from. Heimdall was predicted to kill and be killed by Loki during the doomsday scenario of Ragnarök.

Behind the Scenes

 * Heimdall is the only other Asgardian besides Thor to appear in theatrical films outside of the Thor franchise. Loki does not count, as he is a Frost Giant.