Kalle Demos

Kalle Demos is a gigantic carnivorous plant that serves as the Boss of the Forbidden Woods in The Legend of Zelda: The Wind Waker. It eats Makar after the tiny Korok fall into the Forbidden Woods and Link must defeat it to save him.

Battle
Kalle Demos is made up of two parts. The smallest one is a vulnerable Boko Baba-like head and the biggest one is a multi-armed hanging bulb that attacks Link with its tentacles and protect the head from all attacks. The bulb has two different types of tentacles: the small ones that anchor Kalle Demos to the ceiling and big ones that act as electrified barbs. The electrified ones can attack Link and serves as the main source of damage during the battle.

Link must first snip the tentacles that anchor the boss to the ceiling with his Boomerang, causing it to fall to the ground once they are severed. Kalle Demos' flower is then fully opened, exposing the head to attacks. If Link spends too much time attacking the boss during this state, the bulb will close around him and chew him before spitting him out. Link must repeat that until Kalle Demos is defeated.

After Kalle Demos is defeated, Makar is freed, and Link obtain a Heart Container before returning to the Great Deku Tree. The boss is fought once again in Ganon's Tower in the same manner.

The Wind Waker Figurine
"This plant-monster is a gigantic parasite that lives in the depths of the Forbidden Woods. Only by cutting loose all of its disgusting tentacles with the Boomerang will its tender core be revealed."

Trivia

 * For unknown reasons, Kalle Demos can instantly be killed if Link pours Forest Water on his exposed head.