Loki Vs. LotR
Gandalf--would take a liking to Loki because he is the god of tricks. He'd probably think Loki was a hobbit or something!
Elves—would be wary of him at first until they accept him thinking he is young one of the other races of Middle Earth.
Dwarves—would take an immediate liking to him because Loki is also known as the God of Fire
Humans—wouldn't know anything was amiss about him except for his unusual intellect. The Rangers might notice though.
Hobbits—would probably take a liking to him thinking he is one of them from another part of the country.
Orcs—wouldn't stand a chance against Loki's magic. He'd destroy them quickly to avoid the smell.
Balrog—God of Fire against a creature of fire? Please, the Balrog wouldn't stand a chance!
Saruman—His evil nature and cruelty would be his undoing.
Sauron—That's up to the readers to decide. Even I can't predict the outcome!
Wargs—Loki's son is a giant wolf so he might take it easy on them and kill them quick.
Dragons—same as the Balrog. Wouldn't stand a chance.
Ents—might be wary at first. May accept him just to have a talk with him.
That should cover Loki. But what about the other gods? Keep reading to find out!