Walter Hewitt
ウォルター
Introduced in chapter 21, he got Marco out of jail before his sixty year sentence was served. Even though he works for NSA he’s working with the CIA on the Medusa case. He bribes Marco, when he refuses to work with him, by showing a picture of Zeus at the manor. Even though Marco agrees to infiltrate the castle, Hewitt has a second option to blow up the castle if Marco fails.