Ophelia is a character featured on Once Upon a Time and does not have a Storybrooke counterpart.
She is based on Omidon from Rankin and Bass' Flight of Dragons.
Before First Curse
One day, Ophelia learns from a seer of a prophecy that one day Cordelia's successor will be her destruction by stealing her crown. So, she has a flight of dragons to protect her.
Eventually, Ophelia is destroyed by Priscilla, who uses science over magic.