Belen is a character in the play Anon(ymous), written by Naomi Iizuka. Belen and her father are immigrants to the United States from Central America. Her father is dead (a ghost), and later in the play Belen dies as well, in a truck crash that the protagonist somehow survives.
My older sister's name is Belen. I myself am not a huge fan (it's a nice name) but whenever I tell anyone, they always compliment on how nice it sounds.