Loki (performed by Tom Hiddleston) is the Norse god of mischief and the main antagonist in Thor and The Avengers. He is also the arch-enemy and step-brother of Thor, and is determined to get rid of him. At one point, he even goes so far as to send a giant robot called The Destroyer to Earth to get Thor out of the picture. However, Thor and the Justice Guardians manage to defeat him.
- Lokie will first become Jaden's enemy in Jaden meets Thor.
- Loki will appear again in Jaden joins The Avengers.
- Loki will become Jeffrey's enemy in Jeffrey & Friends meet Thor.
- Loki will return for revenge in Jeffrey, Pooh, Jak, Daxter & Friends' Adventures of Hulk vs Thor.
- Loki will return again in Jeffrey & Friends' Storm Adventures of The Avengers.
- Loki will appear again in Jeffrey, Jaden & Friends' Storm Adventures of Thor: The Dark World.
- Loki will return and become an ally in Jeffrey, Jaden, Hiccup & Friends' Storm Adventures of Thor: Ragnarok.
- Loki will become Twilight's enemy in Twilight meets Thor.
- Loki will return for revenge on Twilight and the Rainbooms in Twilight's Adventures of Hulk Vs. Thor.
- Loki will return for revenge again in Twilight joins The Avengers.
- Loki will appear again in Twilight's Adventures of Thor: The Dark World.'
- Loki will become Aaron's enemy in Aaron Meets Thor. After that, he'll join The Kingdom of Darkness.
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