Mighty Dragon

The Mighty Dragon appears in the Angry Birds Seasons update Year of the Dragon. It fulfills the role of the Mighty Eagle with some differences in function but unlike the Mighty Eagle, it comes free with the update on most platforms. It can be summoned by pressing the "eye" icon by the pause button, giving the player the Red Koi Fish that is used to summon it.

Ability
Like the Mighty Eagle, the Mighty Dragon is an optional character that can be used to destroy the entire Pig fort. However, it has a different style of attack than the eagle. It first comes in from the upper left corner of the screen and goes after the koi. It then attacks by flying in a loop, destroying anything in its path, and creates a small earthquake, shaking the fortress to eliminate any missed Pigs. As a final attack, the dragon shoots into the sky to the upper right corner of the screen. Its unique looping path calls for strategic placement of the koi, but can be utilized in various different angles of attack due to this.

Trivia

 * Just like the Mighty Eagle, the Mighty Dragon can be used in two ways:
 * If the player has not yet passed a level, the Mighty Dragon can be used to skip the level. This can only be done once per hour.
 * If the player has already earned at least one star on a level, the Mighty Dragon has unlimited usage.
 * The Mighty Dragon button replaces the Mighty Eagle button in Year of the Dragon, showing the dragon's eye/bushy eyebrow.
 * Instead of having a sardine can, the Mighty Dragon is summoned by the a Red Koi Fish . The video implies the fish is metal but the online comic strip implies it is an actual koi fish.
 * It flies in a loop instead of crashing into the ground.
 * It can be used for free on iOS, Android, and Symbian^3 devices and does not require purchase of the Mighty Eagle.
 * Depending on the elevation of where the koi lands, the Mighty Dragon may hit surprisingly higher than expected, passing slightly over the koi even, or hit lower, which produces a more thorough destruction by making contact with more objects. All of this depends on if the Mighty Dragon is in the middle of diving or flying straight in its staircase-like descent as it reaches the koi.
 * The Mighty Dragon may in fact be the Mighty Eagle, because in a description for Angry Birds Seasons, it says the Mighty Eagle transformed into the Mighty Dragon.