So to kick this off, I believe that the one they refer to as Buzzbee is the man with the Mohawk. While still hooded, Buzzbee starts to talk, then cuts to a flash of different Vandenreich and it shows the communication bubble in the panel of the Mohawked man.
Also, do you think there is a special power behind As Nodt thorns, cause that red shirt shimigami talks about how the people stabbed scream so much before dying.
Äs could be using those thorns as some sort of acupuncture needles, and sadistically inserting them on points that causes great pain to the victim. That would fit his image