Loudmouth

The Crescendo, also translated as "Loudmouth" in Kingdom Hearts 358/2 Days, is an Emblem Heartless that is found in Kingdom Hearts: Chain of Memories, Kingdom Hearts II, and Kingdom Hearts 358/2 Days.

Kingdom Hearts: Chain of Memories

 * Wonderland
 * Neverland
 * Destiny Islands

Kingdom Hearts II

 * Olympus Coliseum

Kingdom Hearts 358/2 Days

 * Agrabah
 * Olympus Coliseum

Kingdom Hearts: Chain of Memories
A hopping, horn-like Heartless.

It's a bothersome foe that can honk and call other Heartless.

Kingdom Hearts II
''It restores the HP of surrounding enemies. Use Heal Stomp with the right timing to heal the party.''

When attacked, it may call for help, so be sure to defeat it immediately.

Kingdom Hearts 358/2 Days
''These small Heartless cause the most trouble when they toot their horns to heal themselves and their cohorts. The wind missiles they shoot can be returned with a block.''

''TIP: Wind-based attacks can air-toss you. While airborne you become an easy target and will take more damage if hit.''

Attacks
These Heartless can be both a pain and a gain. They have little strength, but their sounds can call in reinforcements. Their sounds can also heal nearby Heartless, but by using the Reaction Command, Heal Stomp, the Crescendo's healing sounds are directed towards Sora and friends instead.
 * Healing Trumpet: Heal Heartless' HP
 * Trumpet Strike: Pounce and trumpet swing
 * Trumpet Summon: Summon Heartless

Design
Musically, a crescendo is a gradual increase in volume.

The Crescendo might be based on a creature that lives in Wonderland. It appeared in the 1951 Disney film Alice in Wonderland. That creature is of the same design as the Crescendo, but slightly different. It is a musical toot horn too, but is more simple. It behaves like a duck, and has duck-like legs. It has a yellow metal ring with the horn as its head, and the airbag as it's body. It has two normal eyes on the metal ring, and the species that was seen had a purple body as well. It was briefly seen in the lotus forest after the mad tea party. Alice accidently stepped on one after she stepped over a treechunk, scaring it. It went down to a lotus pool with it's small children cohorts. It honked furiously. It was later seen crying with all the other forest animals when Alice was lost.

Trivia

 * The Crescendo, as well as the Creeper Plant and Tornado Step, are the only Heartless that were introduced in Kingdom Hearts: Chain of Memories.