An entity called "the Crone" granted her powers and the ability to return to Earth as the Silver Banshee, but demanded payment in the form of an occult book that belonged to her father. She was interrupted by Bevan, and the distraction proved disastrous as she was dragged away into an infernal netherworld. She went ahead with the family ritual by herself, which involved calling on supernatural forces for power.
Her uncle Seamus determined that no woman would lead the clan and intended her brother Bevan to become the new patriarch. When Siobhan was young, she traveled the world, only returning to Castle Broen when she heard of her father's death.
On that island is Castle Broen, where first-born McDougals undergo a ritual to prove themselves worthy to lead the clan. Siobhan McDougal was the first-born child of Garrett McDougal, the patriarch of an old Gaelic clan that has occupied an island midway between Scotland and Ireland for a thousand generations. Fictional character biography Siobhan McDougal Silver Banshee first appeared in Action Comics #595 and was created by John Byrne. Silver Banshee's debut in Action Comics #595 (December 1987).
In television, she has been portrayed by Odessa Rae in Smallville and Italia Ricci in the Arrowverse series Supergirl. Silver Banshee is the name of a fictional supervillain appearing in comic books published by DC Comics, primarily as an opponent of Superman. Perfect fluency in any language, just from hearing a few words.Sonoportation (teleport over sound waves via ultrasound waves).4, #11 (July 1997 DC Comics), art by Gary Frank