"Cameos in Etrian Odyssey"@en . "The Etrian Odyssey series has had a number of cameos within its history. They concern characters from Atlus's other franchises such as the Trauma Center Series and Princess Crown . Listed below are the characters that have cameoed."@en . "The Etrian Odyssey series has had a number of cameos within its history. They concern characters from Atlus's other franchises such as the Trauma Center Series and Princess Crown . Listed below are the characters that have cameoed."@en . . . .