Starting the zodiac with Donald just feels right. Yes, "DuckTales" is very much centered around Scrooge, but Donald was the first Disney duck, and the rest of the world grew around him. Making Donald an Aries feels just as right because, well, close your eyes and think of Donald Duck. What do you see? A duck in a sailor uniform? Or maybe an arms flailing, beak flapping, quacking ball of anger in a sailor uniform? When it comes to the zodiac, few are as quick to anger as an Aries, and when it comes to Duckburg, no one beats Donald for sheer rage.
Even though they have a short fuse, Aries are also bold, heroic, and caring. More often than not, Donald uses his anger to protect those he loves. In "Daytrip of Doom!" once he finds out the Beagle Boys are trying to ransom his nephews, Donald's berserker rage singlehandedly takes the Beagles down as a stunned Mrs. Beakley watches. And long before the triplets ever came along, he was traveling the world, adventuring with his sister, Della, and their Uncle Scrooge.
While he doesn't always show it, Donald is just as much a leader as any Aries. He takes charge during "The Shadow War!" to take down Magica de Spell and rescue Scrooge. Though Donald may sometimes have confidence issues, like any Aries, when he sets his mind to something, he makes it happen.