I didn't know if we could make a new riddle of a character or item someone else had already chosen, so that answered an unvoiced question

I was hesitant to answer the Un-Mother but she seemed to fit the riddle given, and I was right ^^
>.> I worry this awesome game will end prematurely when characters and items inevitably run out. But until then, Imma have fun with this
Yay! My turn again. Hmmmm...
Riddle:
That which calls to me is sweet to mine ears.
What should be my salvation erupts into my worst nightmare.
Laughter and peace turns to screams of fear.
Who am I?