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History

Sean Cassidy is a mutant with the ability to create powerful sonic waves with his voice. In 1962 he was recruited by Charles Xavier and Erik Lensherr in order for him to join their team of mutant peacekeepers they were forming for the CIA.

After the Hellfire Club tried to recuit them, Sean and the others relocated to Xavier's mansion where they began training to defeat Shaw. Xavier taught him how to control his ability and use it to fly by using a harness developed by Hank McCoy.

During the Cuban Missile Crisis, when the team assembled to finally confront the Hellfire Club, faced Angel alongside Havok.[1]

Sometime later; prior to 1973, Sean was (apparently) killed, likely as part of Bolivar Trask's experiments on mutants.

But Sean's autopsy file was not seen by Mystique, implying that Sean may still be alive and that he is likely in hiding; thus he was not among the other mutants that were experimented on by Bolivar, as Erik Lehnsherr only presumes that he is dead.[2]

Years late, Sean's name appeared on a list of names Mystique scrolled through on William Stryker's computer while searching for Magneto's file.[3]

Attributes

Powers

Sean Cassidy (Earth-10005) from X-Men First Class (film) 001

Sound Manipulation: Cassidy possessed the mutant ability to control sound with his vocal chords. He typically manifested the power by screaming, but he's also capable of achieving various effects:

  • Sonic Scream: ability to shatter solid objects with a sonic scream
  • Flight: ability to fly at subsonic speeds by using his voice to propel him through the air and ride the sound waves.
  • Sonar: can use his sonic powers as a form of sonar (Sound Navigation and Ranging). By sending out a precise, pure note and listening to the returning, altered wavefront of the note, he can evaluate his surroundings in total darkness with varying degrees of resolution.
  • Vocal Disorientation: ability to change someone’s balance, by affecting their equilibrium using his sonic scream
  • Sound Immunity: Banshee's hearing and equilibrium are unaffected by his power or other similar abilities.
Superhuman Vocal Stamina: possesses superhuman stamina in his lungs, throat, and vocal cords.

Paraphernalia

Equipment

Sean Cassidy (Earth-10005) from X-Men First Class (film) 007
  • Banshee's Wings: Professor X developed a harness for Banshee's X-Uniform. Using the Harness and his sonic scream he is able to glide on air current. Using the harness he is able to fly at subsonic speeds.

Notes

See Also

Links and References

References

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