Namesakes
Characters in Roman Mythology:
1 character
Luna (f) 
Fictional Characters from Books:
2 characters, 1 hero
Eva Luna 1987 Eva Luna
Luna Garza 2001 The Southern Vampire Mysteries
Luna Lovegood 2003 Harry Potter and the Order of the Phoenix
Fictional Characters from Television:
1 character
Luna Garza 2008 True Blood
Harry Potter Characters:
2 characters
Lily Luna Potter
Luna Lovegood