Tentacle Monster

The tentacle monster is the first monster the Main Five and Running Dude encounter after being kidnapped. It lives in the forest where the characters woke up in Elemental #1.

Appearance
The tentacle monster has one large eyeball, estimated to have a diameter of 1.5 meters, with a dark red iris. Its large mouth with six visible teeth is hidden most of the time.

The monster's body consists of six long, indigo-colored tentacles that can strongly grasp objects. The tentacle monster's mode of transportation is unknown.

By Luna's description of the tentacle monster as "tentacle mush," it can be concluded that the tentacles are fleshy and soft, at least by appearance.

Synopsis
In Elemental #1, the tentacle monster makes its first appearance chasing the Running Dude as he yells for the Main Five to "Run! Save yourselves!" The monster catches the Running Dude when he trips.

The monster's and the Running Dude's whereabouts are unknown to the audience and the Main Five at the beginning of episode 2. However, it is soon spotted by Amber and snatches Halcyon in one of its tentacles. The rest of the group use their powers to save Halcyon, who has no nearby source of water to use, and Aurora hits the monster with an orb of darkness. The tentacle monster slowly disintegrates into a shapeless mass and sinks into the ground.

As of Elemental #5, no news of the tentacle monster has been provided. The characters seem to presume it dead, though Luna warns that it might still be alive underground.