Hofund, often simply referred as the Bifrost Sword, was an Asgardian sword used by Heimdall and, during his exile, Skurge. It also served as a key to activate the switch that opens the Bifrost Bridge.
Protector of the Realms
Frost Giants Attack
While warning Thor, Sif, Loki, and the Warriors Three about his oath to protect Asgard from an invasion as they traveled to Jotunheim, Heimdall placed Hofund in a slot that activated the Bifrost Bridge.
Loki Takes the Throne
Heimdall used his sword in an attempt to attack Loki, but Loki simply froze him in ice with the Casket of Ancient Winters before the blow could strike. Eventually, he was able to free himself, and he quickly cut down the two Frost Giants who had been left to guard the Bifrost, opening the Bridge for Thor and his friends using Hofund as a key.
After the events of the Sacking of Asgard, Loki became the ruler of Asgard disguised as his father: Odin. Seeing Heimdall as a threat to his reign over Asgard, Loki exiled Heimdall for supposed negligence of duty, so he could secure his position as king without Heimdall seeing though his deception. Loki then employed Skurge as Heimdall's replacement, and putting Hofund under his command. Skurge would use the bifrost and Hofund to steal objects from Earth. When Thor sought to flee a furious Fire Dragon in Muspelheim, Skurge activated Hofund and used the bifrost to bring Thor back to Asgard, with a severed dragon head caught in the pull, drenching Skuthe and Hofund in dragon blood.
In an attempt to disable the Bifrost Bridge, Heimdall returns and stole Hofund to prevent Hela and Skurge from activating the Bifrost and laying waste to the Nine Realms. Heimdall wielded Hofund as a regular weapon to fend of Hela's army for the remainder of her occupation of the Asgardian throne.
Sending Hulk to Earth
When the Statesman came under attack by Thanos, Heimdall was one of the many injured, and laid on the ground with a damaged Hofund by his side as Thanos and the Black Order killed injured Asgardians still on the ship. After Hulk fought Thanos, and was defeated by him and thrown to the ground, Heimdall used the still intact enchantments of Hofund to activate the Bifrost, which teleported Hulk to Earth, and away from danger. However, this attracted the attention of Thanos, who then killed Heimdall, causing him to drop Hofund to the ground as he died. Hofund was destroyed in the explosion of the Statesman after Thanos departed, using the Power Stone to implode the ship.
- In the comics, Hofund was made by the Dwarf smiths of Nidavellir, like Thor's hammer Mjølnir and Odin's Spear Gungnir.
- Hofund is most commonly used to open the Bifrost, but Gungnir was also used for this purpose by Odin and Loki.
- Heimdall's sword in Norse mythology is called Höfuð (or Hofud), meaning 'head'.
- Hofund was designed and forged by Indiana swordsmith, David DelaGardelle.