Katrina

{{character infobox
 * name=Katrina
 * image=[[Image:Katrina.png|225px]]
 * first appear={{e|3ACV18}}

Katrina is a purple winged fairy that appears briefly in only one episode, then is never seen again. She is given a chance to ask the What-If Machine a question, and is or was presumably a member of the Planet Express crew.