Shirley the Mediumis a Chihuahua who has a frequently occurring role on the show as an antihero. She is played by Mary Testa.
- Partial heterochromia in the left eye
- Large earring on her right ear
- She wears a green dress with a purple and blue bell cape
Shirley is a mystical fortune teller whose main hobby is casting curses on those who defy morality. She despises the greedy and the inhospitable and subjects them to spells that only repair them when their sins are reversed. Ironically, she is very fond of money, charging heavy fees on clients and selling herself on television are some of the ways she is obtained. This is probably because she is poor (as shown in Shirley's curse).
- He refers to Justo as "The Stupid One"
- Play the saxophone
Shirley's first known curse was brought to famous pianist Velvet Vick, confining him within his own record in the episode The Record Deal. The spell will allow her to escape when the album was played, however she buried it deep within a chest, eliminating that possibility. Her services as a spiritualist are advertised on the channeling channel. It is in this way that she was found by a farmer trying to communicate with her deceased brother of hers. After warning him of the consequences of contact.