The Joker (occasionally using the pseudonym 'Joseph Kuhr') is a fictional character, a supervillan in the DC Comics universe. Created by Jerry Robinson, Bill Finger and Bob Kane, he first appeared in Batman in
"Night and The Doctor" 5 minisodes with River Song! The order is: Bad Night Good Night First Night Last Night Up All Night. Also on this site search "Doctor Who prequel" for other prequels, as well as "Pond Life"
Morrigan - Celtic Goddess of War, part of the triple goddess Morrigan along with Badb and Macha. Also known as Anu, Mor Righ Anu. Takes the form of a raven and flies over battlefields and choose who will die, taking their souls to the otherworld