Sister Kate manifests as a hologram. She appears able to project herself nearly anywhere in the world despite the lack of a readily visible projector. Her duties include relaying messages, gathering information, and most importantly, captaining the battleship Iron Maiden. She was originally from Albion. Sister Kate is also known to be an old friend of Lady Caterina and Father Wordsworth. Despite her friendship with the professor, she has little tolerance for his errors, and has outwardly expressed her outrage towards his foolish mistakes and failed inventions. (Source: Wikipedia)