Quack is a quirky, if shy, kind of duck. They startle easily may retreat from loud conversations or people they do not know. They tend to open up and be more outgoing around those they are comfortable with, but it may take a while for them to warm up to strangers. Quack has a tendency to ramble when talking, and doesn't think too much about what they say as they say it.
Quack is agender, and will not disclose their assigned sex when hatched. They do not mind if others slip up and refer to them as male or female, but would prefer they/them pronouns. Repeated deliberate use of incorrect pronouns will bother them.
Quack is a white domestic duck, but they sometimes dye their feathers with temporary dyes. They always wear a green anklet though, one that looks rather like a tag.

More to be added as I remember to add it.