Sean Cassidy is a character in a X-Men film.
| Real Name | Sean Cassidy |
| Superhero Name | Banshee |
| Team | The X-Men |
| Powers and Abilitys | Super-Sonic Scream |
| Age | 20's |
| Gender | Male |
| Actor | Caleb Landry Jomes |
| First Appearance | X-Men: First Class |
| Latest Appearance | X-Men: First Class |
History[]
In 1962 he joins Charles Xavier's team of mutants.However later on he is killed.