Bio:
While Loki is considered an Asgardian, he is actually the son of Laufey, the former king of the frost giants. Odin led the Asgardians into battle against the frost giants and slew Laufey. Loki was found as a baby, hidden away in Laufey's castle. Odin took the infant Loki back to Asgard and raised him as his own son, along with his real son Thor. Loki was not a great warrior, or very brave, and so he was never truly accepted by the other Asgardians, while Thor was loved by all. In response to this treatment, Loki began to play pranks on Thor and others and soon became known as the god of mischief. However, as they grew older, Loki's hatred of Thor grew stronger and his pranks grew more and more cruel and dangerous. Eventually, Loki became known as the god of evil, and became an outcast from Asgard when he attempted to usurp control from Odin.
Powers:
Loki is the son of frost giants and so is endowed with super-strength and stamina and is much more resistant to injury than a mortal being. He is extremely long-lived and immune to all Earthly diseases. He also possesses a great intellect, though he is often blinded by greed, jealousy, or hatred and overlooks some small detail. He also has the inborn powers of persuasion, astral projection, and inter-dimensional teleportation. Loki is perhaps the most powerful sorcerer among the gods, making him extremely dangerous. He has been known to create force fields, energy blasts, enhance his own strength and invulnerability, imbue others with powers, fly at high speeds, and various other effects.
Loki has an amazing healing factor.
Here, he gets his head cut off by Balder, he stands the whole time, goes, and picks up his head, and puts it back on his neck. (please log in to view the image)
Here Loki takes control of a missile whilst chained up in another dimension,then he creates an illusion to distract Thor so his Hammer comes back and conks aThor on the head,turning him evil,heh,and they say Doom is the master of prep
Now we see Loki having a pissing contest with the evil Thor,feats show Loki animating the great sphinx,turning a whale into a sea serpent,bringing a building to life and ressurrecting a dinosaur.
It's the "Evil Eye", an artifact he tricked Doctor Strange into making for him. It was powerful enough to merge his dimension with the main 616 reality.