Names: Athena Angitia Ambrosius/Potter
Titles: the Once and Future Queen, the Girl-Who-Lived, Court Physician's Apprentice, (the) Morrigan (like how Merlin is called Emrys)
Relations: Arthur's wife, Merlin's older twin sister
Age: 15 (when watching the movies), 19 (at the start of the series)
General info:
She is 30 minutes older than Merlin in all lifetimes.
Harry Potter info:
Athena's best friend is Mattheo
She calls Mattheo - 'Pretty Boy' - flirty but not a Mattheo love story
Her patronus is a lion (Camelot Crest)
She is part of a separate prophecy
Hogwarts House: Slytherin
Quidditch Position: Beater
Merlin info:
She has been in Camelot for two years before Merlin comes along
She is Gaius' apprentice
She is good friends with Gwen
She has a different destiny to Merlin's
She has visions similar to Morgana's
Name Meanings:
Athena: Goddess of Warfare, Wisdom and Crafts
Angitia: Roman snake Goddess associated with magic and healing
the Morrigan: translated as 'Great Queen', related with war and fate, especially with foretelling doom, death or victory in battle. Goddess of War and Battle.
Nicknames for different people:
Arthur: Thena/Love
Merlin: Ena
Gwen: Athy
Gaius: Athena
Gwaine: Attie/Firecracker
Mattheo: Gorgeous
Pansy: Thenie
Hermione: Thene
Fred and George: Potter One
Everyone else: Athena