Silver Banshee

Silver Banshee
Silver Banshee (Siobhan McDougal) Cover of Supergirl vol. 4, 11 (July, 1997 DC Comics). Art by Gary Frank.
Publication information
Publisher	DC Comics
First appearance	Action Comics #595 (December, 1987)
Created by	John Byrne
In-story information
Alter ego	Siobhan McDougal (earlier real name) Siobhan Smythe (The New 52 real name)
Team affiliations	The Society
Abilities	Superhuman speed, durability, the strength of ten men Hypersonic Screams Hypersonic Screeches Her sonic abilities also allow her to teleport via sound waves Perfect fluency in any language just from hearing a few words

Silver Banshee is a fictional comic book supervillain appearing in books published by DC Comics, primarily as an opponent of Superman. However, she is a superheroine in DC Superhero Girls, similar to the Batman villainesses.

Silver Banshee first appeared in Action Comics #595 and was created by John Byrne.

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. On that island is Castle Broen, where first-born McDougals undergo a ritual to prove themselves worthy to lead the clan. When Siobhan was young, she traveled the world, only returning to Castle Broen when she heard of her father's death. Her uncle Seamus determined that no woman would lead the clan and intended her brother Bevan to become the new patriarch. She went ahead with the family ritual by herself, which involved calling on supernatural forces for power. She was interrupted by Bevan, and the distraction proved disastrous as she was dragged away into an infernal netherworld. 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 found that her father's book collection had been shipped off for sale in the United States. Her quest brought her to Metropolis. Killing anyone that stood in the way of her search attracted the attention of Superman, who was able to defeat her when he realised that she could only kill a person once as she turned away from someone who resembled a previous victim; by faking his death, Superman was able to enlist the Martian Manhunter to attack Banshee by posing as Superman's ghost. Unable to defeat Superman, she chose to retreat and continue her mission at a later date.

Silver Banshee returned to Metropolis twice more, but was halted both times by Superman. It was Batman who finally found the book among some stolen goods in Gotham City. Superman brought the book to Castle Broen where he was confronted by Silver Banshee. The Crone appeared at the castle, and after an enigmatic warning to Superman, she dragged the Banshee, Bevan, and Seamus off to her Netherworld.