Luna Lovegood

Luna Lovegood is one of the characters in the Harry Potter series by J.K Rowling.

Luna Scamander (née Lovegood) was a witch and daughter of Xenophilius Lovegood and his wife. Her mother accidentally died while experimenting with spells when Luna was nine, and Luna was raised by her father, editor of the magazine The Quibbler, in a rook-like house near the village of Ottery St. Catchpole. Luna attended Hogwarts School of Witchcraft and Wizardry from 1992 to 1999 and was sorted into Ravenclaw house. In her fourth year, Luna joined Dumbledore's Army, of which she became an important member.

Nuna
Nuna is the ship between Neville Longbottom and Luna Lovegood.

Neville Longbottom
They first met on the Hogwarts Express, in 1995. Neville found Luna a bit "odd", as she believed in the existence of strange, mythical creatures, had a tendency to read magazines upside down, and wore earrings that appeared to be made of radishes. Luna and Neville she fought alongside eachother at the Battle of the Department of Mysteries, the Battle of the Astronomy Tower and the Battle of Hogwarts. At some point they became very close friends. During Neville's last year at Hogwarts, he, Luna and Ginny, re-formed and co-led Dumbledore's Army in order to oppose the Carrows. Neville seems to have a place in his heart for Luna, they also remained close friends in later life. It seemed that Luna was always glad when Neville, Ginny, Hermione, Ron and Harry were close by, proved when the trio visited Luna's father Xenophilius Lovegood and seeing Luna's room with their painting on her bedroom wall connected with gold letters spelling friends.

Rolf Scamander
It's unknown how or what Luna and Rolf relationship is like. It was released in J.K. Rowling: A year in the Life that Luna would meet and get married to Rolf Scamander. Where, they would also have two children together, Lorcan Scamander and Lysander Scamander.

Lysander Scamander
Lysander Scamander was one of the twins born to Luna Scamander (née Lovegood) and Rolf Scamander. He has a twin brother, Lorcan.

Lorcan Scamander
Lorcan Scamander was one of the twins born to Luna Scamander (née Lovegood) and Rolf Scamander. He has a twin brother named Lysander.

Trivia

 * In the film adaptations Luna Lovegood is portrayed by Evanna Lynch.
 * According to the film adaptation of Harry Potter and the Half-Blood Prince Luna sleepwalks at night and says because of that she wears shoes to bed.
 * Luna believed in many things that few others do. Given her inclination towards superstition, she would've probably liked Divination. However, as she grew older, she came to accept that some things simply do not exist. She believed in such things like Nargles, everything in the Quibbler and Moon Frogs.