Loki

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This article is about Loki, not to be confused with Lokii.

Loki is a boss that can appear in all environments of Chapter 3 (Depths, Necropolis, Dank Depths).

Behavior

Loki teleports to random locations in the room away from Isaac and has the following attacks:

Shoots 4 projectiles in the four cardinal directions, followed by the four diagonal directions, and then the cardinal directions once again.
Spawns a Boom Fly on top of himself. A maximum of 4 Boom Flies can be alive at once.
Shoots 8 projectiles in all directions.

Loki deals a whole heart of contact damage.

A Poky can accompany Loki during the fight, dealing contact damage and blocking Isaac's tears.

Loki can also be accompanied by 4 Stone Grimaces in the corners of the room.

Gallery

Loki's appearance.
Loki as one of Delirium's forms.

Notes

Using the Meat Cleaver on Loki has a unique interaction, splitting him into Lokii.

Trivia

Loki appeared in the original The Binding of Isaac.
Loki has smaller eyes and different horns in his boss portrait.
The Poky in the room does not damage Loki's Boom Flies as it did in the original game.
Loki's "mark" (The numbers 666 on his forehead) is more noticeable than his appearance in the original game.
Lokii is the posthumous version of him.
Loki is based on the Norse trickster god of the same name.
Edmund McMillen loved Loki's design so much that he made Little Horn.
The Horny Boys are a stitched amalgamation of Loki and Hornfel.
Loki and Hornfel are siblings.^[1]