Sean Cassidy (Banshee)Edit
He has the ability to shatter solid objects with an incredibly loud and destructive sonic scream.
Theresa Cassidy (Siryn/Morrigan)Edit
Siryn can cause her vocal cords to vibrate over a wide range of sonic frequencies and produce a volume of sound ranging up to at least 140 decibels. Siryn has thus the ability to shatter solid objects with a sonic scream.