Caliborn, also known by his chathandle undyingUmbrage, is a cherub with cherry red blood from a dead session of the game who shares a body with Calliope. He was confirmed to be the young Lord English.
Caliborn is perhaps the most alien of all the voiced characters. He has a terrifying obsession with playing games, so much so that Calliope claims his love for them surpasses human comprehension of what love is. Additionally, he is obsessed with superstitions and "JuJuS", which define much of the relationship and "game" with his sister. Thirdly, he shares his sister's interest in romantic relationships, but unlike Calliope, he sees them as disgusting.