Big Tree

The Big Tree (ビッグツリー) is a creature developed by Dr. Indigo using the chemical SIQ for Shiki's plot to use monstrous animals to attack East Blue to force the World Government to submit to him.

An impostor of the jungle, mimicking a tree it waits for prey. To tell it apart is a near impossible task.

It appears in One Piece Film: Strong World, in Merveille, when the animals from the archipelago are summoned to the main island. But since the Daft Green trees around Shiki's palace were blown up, Big Tree and many other animals invaded the palace. Later, a Big Tree was defeated by Sanji and Brook.

Trivia

 * The Big Tree is based off of the Phasmatodea, commonly known as the stick insect. While the Phasmatodea resembles small twigs and branches, the Big Tree imitates an entire tree.