Heimdall is the Asgardian gatekeeper of the Bifrost Bridge. He has the ability to see and hear nearly everything that occurs in the Nine Realms. His senses were deceived by Loki, who helped a group of Frost Giants break into Asgard. Heimdall attempted to stop Loki, but was frozen by the Casket of Ancient Winters. Heimdall was eventually able to free himself and open the Bifrost Bridge for Thor. Later, Heimdall would fight against Dark Elves that stormed Asgard, and succeeded in destroying one of their ships. Shortly after the attack, Heimdall would disobey Odin's orders to shut down the Bifrost in order to allow Thor access through.
Powers and Stats
Tier: At least 8-A
Origin: Marvel Cinematic Universe
Age: Over 1000
Powers and Abilities: Superhuman Physical Characteristics, Omni-Senses (His sight itself extends to all of the Nine Realms, and his hearing is so sharp and precise that is able to hear other Asgardians calling to him from other worlds and realms, such as Midgard, Jotunheim, Vanaheim, or Sakaar), Martial Arts, Longevity, Transdimensional Communication (When Heimdall was called upon by Thor from Sakaar, he was able to allow Thor to temporarily see his own surroundings on Asgard)
Speed: Supersonic (Was able to blitz multiple Frost Giants while severely weakened)
Lifting Strength: Likely at least Class 50 (Comparable to Loki)
Striking Strength: At least Multi-City Block Class
Durability: At least Multi-City Block level (Survived being frozen by the Casket of Ancient Winters)
Range: Melee range
Standard Equipment: Hofund, his sword
Intelligence: Has considerable combat knowledge, has observed things all over the universe through his enhanced senses.
Weaknesses: His senses can be deceived