"The [Avatar of XX] series Monsters are created by Gong Qiying using other Monsters.
Their main bodies are usually Losric Knights stripped of their Armor, and by fitting them with corresponding gear, they automatically master the use of these equipments.
As for Marathon, 'Lower Instruct', and 'Little Snacks' or something of that sort, Gong Qiying guarantees he didn't teach them, definitely not (feeling guilty).
He hasn't chosen to deploy stronger Monsters because on one hand, it's not cost-effective to waste spiritual power on such a hidden punishment mechanism—just a punishment for the Exploration Team will do. On the other hand, he's rather optimistic about this team.
There's a bonfire in the upper, middle, and lower layers each, except for the last one, all of which can display videos. He's looking forward to what kind of stories they can conjure up after watching them all.