Bonkers

] Bonkers is a gorilla/troll-like mini boss that has armor and a giant hammer. They sometimes toss coconuts that Kirby can inhale and spit out causing damage to Bonkers. Certain coconuts are larger and will explode and in games with health bars these do more damage. When Bonkers is swallowed, Kirby gets the potent hammer power. In Kirby Super Star and Kirby Super Star Ultra, he appears as the Helper for the Hammer Ability. Unlike Kirby he can't use the hammer throw.

In the Anime
] Bonkers lived in a jungle until a circus crew captured and trained him for the circus. While Bonkers was held hostage, the ringmaster decided to watch his favorite show, which was the Kirby show. This is how Bonkers got inspired to meet Kirby in person, so, without letting the circus find out, he quietly escaped and wandered off to Dreamland in search of his favorite hero.

When he finally got to Dreamland, the Cappies at first thought he came to battle Kirby, but soon everyone learned that Bonkers really wanted to train with Kirby. Knowing this, King Dedede had plans for Bonkers, so first he asked Bonkers to impress Kirby with his hammer skills, and tried to smash Kirby with a boulder, but Bonkers smashed the boulder with his hammer to make sure his favorite superhero wasn't hurt at all, so Dedede took him all the way to the castle, and got Nightmare Enterprises to turn Bonkers into a monster! Thankfully, he was returned to normal, and he left, hoping to continue his training.