Three entries with the name le Serpent.
le Serpent
Gawain saw a serpent fighting with a leopard in the Adventurous Palace at Corbenic (Carbonek). Bors saw the same serpent in the same place.
le Serpent
Lancelot killed a serpent at Corbenic.
le Serpent
The one which, as Arthur dreamed, issued from his body the night he begat Mordred, and its picture in the cathedral at Camelot which Arthur had painted on the wall in remembrance of his dream.