From the Super Mario Wiki
The Worm is a character in the game Donkey Kong 64. He only appears in the level Fungi Forest. The only Kong to have any real contact with the worm is Chunky Kong. When Chunky meets the Worm, he asks him to get rid of the Tomatoes that ate his friends. He will then ask Chunky to move his apple house out to where the giant clock tower is. After this, he gives the Kong a Golden Banana.