On the other hand, working out who the beast is, that became clear to me!

It's actually a lot simpler than most realise. We use the Roman Alphabet and score A=1, B=2, C=3. We now need to weight this according to the importance of the names.

Each letter in a surname counts as 6 for a "beast number"

(main) forename name counts as 2 to (a beast number divided by 1/2 a beast number or 6/3)

With other names only the initials are counted again as 2 but if but if they are "unused" ( eg. John H Smith may only be referred to as John Smith) as they are "rejected", they must be negated, ie. -2.

I tried it and I found this:

K = 11 x -2 = -22
  
  
  R = 18 x  2 =  36
  
  U = 21 x  2 =  42
  
  P = 16 x  2 =  32
  
  E =  5 x  2 =  10
  
  R = 18 x  2 =  36
  
  T = 20 x  2 =  40
  
  
  M = 13 x  6 =  78
  
  U = 21 x  6 = 126
  
  R = 18 x  6 = 108
  
  D =  4 x  6 =  24
  
  O = 15 x  6 =  90
  
  C =  3 x  6 =  18
  
  H =  8 x  6 =  48
  
                ---
  
               666

(Well it was the best I could come up with in a quick play a month or so ago)