Sweetie is a young, pink female canary, who wears a light blue bowed ribbon in her hair. She attends Acme Looniversity and lives in Acme Acres. Her mentor and favorite teacher is Tweety. Sweetie's pink coloring, devious grin, and somewhat mean-spirited personality seem to be a throwback to Tweety's early appearances. Sweetie is voiced similarly to comedian Judy Tenuta -- speaking in a liquid trill followed by a throaty screech (when excited). Her voice rises to a deeper, more sadistic tone when she is about to harm, eat, or squash something or someone. Her voice can quickly go from sweet to tough as nails.
Sweetie uses a delicate flutter when she flies and toddles on the ground in a cute "baby" walk.
Sweetie's diet consists mainly of worms, horse-flies and other insects. She usually refers to a bug as "a tiny, little morsel," or "a tasty, tender McBugget." Sweetie has a ravenous appetite for worms, but the elusive Bookworm is much too smart to fall for her "sweet" facade. Often the tables get turned on Sweetie and she is pursued by Furrball, who she inevitably ends up clobbering mercilessly. Depending on the cartoon, Sweetie lives in a treetop nest, in a birdhouse, or in a cage at Elmyra's house. In most of these cartoons, Furrball is chasing the little bird, who always manages to annihilate him.
Abandoned as an egg, Sweetie grew up tough on the inside and tender on the outside. Sweetie's personality tends towards behaving in an amiable manner, but is prone to a mischievous streak when dealing with her main enemy and longtime pursuer, Furrball. Completely sweet, yet totally diabolical, our sleepy-eyed baby hatchling is somewhat of a Dr. Jekyll/Mr. Hyde. As the cutest thing on two wings, Sweetie plays her "sweet routine" to its saccharin limits, posing coyly and acting like a flying Shirley Temple, but deep in her heart, Sweetie has the survival instincts of an urban guerrilla. In the short, Let's Do Lunch, Sweetie is seen to be owned by Elmyra Duff, who also owns Furrball, setting up the familiar scenario seen in earlier Sylvester and Tweety cartoons. In the short, Cross-Country Kitty, Sweetie and Furrball are both shown to be living with Mary Melody. Sweetie constantly outsmarts the predatory Furrball by making him look bad in front of his usually sweet-tempered owner, to the point of his eviction (or even voluntarily leaving because of her) from the home or apartment.