Chicken Little

Chicken Little is a Summon that appears in Kingdom Hearts II. He is obtained by talking to Merlin after visiting The Land of Dragons and Beast's Castle ( or Olympus Coliseum if Sora skipped either of the aforementioned worlds.) To summon him, Sora uses the Baseball Charm he receives from Merlin.

Chicken Little sets a number of firsts for a Kingdom Hearts character; he is the first character from a computer animated Disney movie to appear in the series, is the newest character to appear to date, and debuted in Kingdom Hearts II before his own movie debuted in Japan.

Kingdom Hearts II
''Chicken Little has more pluck and heart than most boys twice his size. He never turns away from a challenge, no matter how big it is.''

He's a loyal pal of Sora's, and is always quick to answer a call for help.

Abilities
By summoning Chicken Little, he can fire baseballs to attack the enemy. He also whistles occasionally to stun enemies and attract them to Sora, making damaging groups of enemies easier, and can heal 40% of Sora's HP by using his Healing ability. He's a particularly good summon for defense, as you can not be harmed while performing his limit.

His Limit is FPS (First Person Shooter) Mode. In this mode, you can target the enemy through a scope and will have two abilities. One will throw firecrackers at the enemy, knocking them back and stopping them from moving; the other lets him throw baseballs to stun and damage the enemy. You can end the limit by pressing the Square button.

Trivia

 * When Chicken Little is summoned he exclaims "Sora!", showing that he is excited to see him, but if it is the first time he's been summoned it makes little sense because of the fact that this is the first time the two actually meet. Thus so how could Chicken Little know Sora's name?