She is a friendly, kind-hearted duck who was given a magic pendant, which turns her into a teenage girl. This pendant also allows Duck to turn into her alter-ego, the wise and graceful Princess Tutu.
Duck is a friendly, kind-hearted character. Like a duck, she is easily excitable, clumsy, and talkative. It is shown in the anime that she can be extremely scatterbrained and uncollected in a nervous situation.
You can download this papercraft toy here: Princess Tutu - Chibi Ahiru / Duck Free Paper Toy Download [Instruction]