Bunnymund is a cool calm Australian as dry as the Outback. A natural ranger, he is an In the dirt, rough and tumble protector of nature. He follows nature's rhythms and when it's time to spring into action he waits for the perfect moment to act. When he finally does, it's all over in a heart beat with the help of his exploding eggs and enchanted boomerangs. Bunny is completely unflappable. The only things that does get under his skin are North's constant ribbing about how Christmas is more important than Easter and his grudge on Jack Frost for causing a blizzard on Easter in '68. (And how Jack use to call him a Kangaroo.)[1]
Bunnymund takes great pride in Easter, and its corresponding season, Spring, stating Spring and Easter represent new beginnings, new life, and the Hope that comes of it. Aside from his tough side, Bunnymund is afraid of Greyhounds.