Queen Minnie

Queen Minnie is an original Disney character, and has appeared in Kingdom Hearts and Kingdom Hearts II.

In the story, she is queen of Disney Castle, ruling the peaceful kingdom with King Mickey.

Kingdom Hearts
''Queen of Disney Castle, ruling in Mickey's absence. I, Jiminy Cricket, am accompanying Donald and Goofy as the royal chronicler at her request. Queen Minnie is more concerned than anyone about the king's disappearance. Minnie made her screen debut in "Steamboat Willie" (1928).''

Kingdom Hearts II
Queen of Disney Castle.

''She is ruling in Mickey's absence. At her request, I'm tagging along with Donald and Goofy as the Royal Chronicler.''

Queen Minnie is quite concerned about the King, but she knows in her heart that he'll be all right.

Kingdom Hearts
Queen Minnie and Daisy Duck go over to the flowery courtyard, where they see Donald Duck fussing with Goofy about a top secret. They demand an explanation for that, so he hands over the letter he found in Pluto's mouth from King Mickey. After that, she has them follow the king's lead, worrying for all of them as well as Chip and Dale, who are the engineers for the Gummi Ship. From there on, she rules the kingdom on her own.

She is the one who sent Jiminy as their royal chronicler.

She is not really seen again until the ending credits of Kingdom Hearts, where she sees Donald's nephews Huey, Louie and Dewey return from Traverse Town.

Kingdom Hearts II
A year after the events of Kingdom Hearts, Queen Minnie is still ruling the world of Disney Castle on her own, with Lady Daisy as her advisor.

Prior to Sora and co's visit, black rose thorns suddenly appear in the Hall of the Cornerstone where the Cornerstone of Light is kept. Soonafter Heartless begin appearing in the castle and that opens the pathway to Disney Castle.

When Sora and the others visit Disney Castle, they find out that it is in danger because of Maleficent and Pete, who are threatening the castle by changing the past. Sora escorts Minnie to the king's throne, where a secret entrance lie for the castle construction site in the past (Timeless River).

After the castle is safe again, Queen Minnie continues to protect it.

During the end credits, she is seen reunited with King Mickey, holding hands and noses touching each other.

Abilities
Minnie does not have any real offensive techniques unlike the the other support characters, but she fires a blue sphere of light when she sees an enemy attack. Together, she and Sora can use the powerful "Faith" technique, which temporarily banishes all Heartless in range, or defeat them if they are wounded enough.

Trivia

 * The original Minnie Mouse is not seen in Timeless River, suggesting that she wasn't present back in the early days of Disney Castle. It is more likely though, that the creators had no reason to present her in her original form, as Minnie had been created at the time of the original Steamboat Willie cartoon the world is mostly based on.

Minnie Maus