The knights, Merlin and Gwen had become obsessed with seven books that appeared out of nowhere one day. They had fallen into the habit of yelling nonsense words that Arthur couldn't understand and were calling each other by different names as well as having 'duels' in which they yelled said strange words. When Arthur tried to confront them about their weird obsession; they were discussing houses.
"We're in Gryffindor house. We're brave, daring, chivalrous and break all the rules." Gwaine insisted gesturing to the knights.
"I'd say Merlin would be a Ravenclaw," Lancelot mused while Merlin nodded. He was smarter than he looked.
"You'd be a Hufflepuff; you're just and loyal and all that." Elyan told his sister.
"Thanks; I thought I was more Gryffindor." Gwen replied.
"Remember,' better Hufflepuff than Slytherin' the likes of Morgana would definitely be a Slytherin." Leon added and they all nodded in agreement.
"What are you all talking about?" Arthur finally asked.
"Our Hogwarts house." Percival answered like it was obvious. Arthur raised an eyebrow.
"What's Hogwarts?" he asked. The seven of them shared a look and a nod.
"Muggle."