Supervillain Shamrock Shadow (Real Name: Siobhan Murphy) Superpower: Invisibility and intangibility, allowing her to become unseen and pass through solid objects at will. She uses this power for espionage and theft. Backstory: Siobhan Murphy was a skilled spy who volunteered for an experimental procedure that granted her these abilities. Turning to a life of crime, she operates in the shadows as Shamrock Shadow, stealing valuable information and wreaking havoc.