The Boy-Who-Lived encounters the Duck-Who-Didn't!
Harry James Potter-Evans-Verres (check out Eliezer Yudkowsky's long Harry Potter fanfic over at [link]
it's a great read) along with Hermione Granger and Draco Malfoy - facing off against Dead Duck and his sidekick, Zombie Chick (created by Jay P. Fosgitt, read more at [link]
Apologies for the weak joke - it helps if you're familiar with both characters in advance. It just seemed inevitable that the budding neophyte wizard-scientist who invented Expecto Patronum 2.0 would have a showdown with the Grim Reaper's minion.
Harry Potter is (C) J.K. Rowling,
Dead Duck is (C) Jay P. Fosgitt.