Publication Date: 
1st Sep 2017
Image Work: 
Real name

Sean Cassidy


6' 0"


170 lbs

Hair color

Reddish Blond



First appearance

X-Men (1st
series) #28

Known Relatives

Maeve Rourke
(wife, deceased),
Theresa Rourke Cassidy / Banshee II
(daughter), Tom Cassidy / Black Tom


Former Interpol agent, police officer,
school headmaster

Group Affiliation

Formerly X-Men, X-Corps, Generation X, Interpol, Four Horseman of Death, Factor Three


• "Sonic scream" emits controllable wavelengths and frequencies beyond the human range of sound, able to shatter, liquefy or disintegrate solid matter, repels objects to shield himself or fly through the air, emit sonar pulses to map out his surroundings or scramble incoming wavelength probes, and focus his sonics at another person to render them unconscious, deafened, or experiencing nausea and dizziness
• Compensates for his powers with superhuman hearing and a resistance to intense sound
• Celestial technology resurrected and augmented his body with a near-invulnerable bio-mechanical armor