Kingdom Hearts II Donald and Goofy's Action Abilities

Something I've been curious about. Why do all of this magic abilities have "Donald" before them?

• Donald Fire
• Donald Thunder
• Donald Blizzard
• Donald Cure

Instead, why didn't they just have Fire, Thunder, Blizzard and cure?

Edit: Oops. This is the same case for Goofy. His abilities are Goofy Bash, Goofy Turbo and Goofy Tornado, but why not just Bash, Turbo and Tornado?

Will edit the title.