Appearance and Personality
"He wore more badges on his uniform than any of the other guards, and he had a very thin, dark beard."
Sir Lampton catches the twins trying to sneak into the palace and offers to show them around. He tells them about the castle and its inhabitants. Later in the book, it turns out he is the one who secretly puts Cinderella's glass slipper into their backpack to help. He explains that he knew their father growing up, and recognised them straight away.
In Beyond the Kingdoms, it is mentioned that he has been helping the twins find the Masked Man before the events of the book take place. He and his army suffer great losses when the Winkies attack the Charming Kingdom, but he and his men manage to escape and are hiding in the forest with Sir Grant and his men.
"Let's be the first ones to show these monsters that the Charming Kingdom is not for sale! Let's give them a taste of the Charming Army so they cower in fear when our brothers return from hiding to finish them off!"
(Add your fave quote here!)