Many parts of the United States of Diavolo were designed with reference to City 17 in Half Life 2 Beta

Barney Zombie

PTTR

Mr Crowbar Man

Gman yeti

Drew Gordon Freeman! :D

Otis Zombie

m̵̶̴̛̬̗̯̟̰̪̱͙͉͇̉ͩ̎ͩͫͫ̌̏̃̃͢͠ǫ̴̛͕̗̣͔̗̩̞̘͈̺̥̎ͩ̐̄͒̋̆͊͊͠͠͡g̷̨̢̨̯̫̙̖̱̼̮̮̹̥̦̦̫͛͆ͤͩ͌̆͆͋̒̌̕͘͞͞͝e̡̖̩̜̮̪̳̪͚̩̙͋̓̇́ͦ̒̈́̎̆̓͜͡-̶̡̢͇̤̣̹̼̼̦̯̻͗͆ͨ̎̄̇͐̓ͨͩ̋͝k̶̢̡̧̯̹̱̭̣̩̼̠̟ͣͤ̄̈̆̇̐͒ͯ̐͆͋͜͝o͇̲͍̦͇̞̹ͮͯ̊͂ͬ́̑̓̓͜͝͝͏̘̠̙̗̋ͫ̓ͬ̔͐̓̍͆̉ͦ͢v͈̤̳̪̲̩͎́ͫ̔͛̂͋̿̌͛̇̊̋̑͒̊͛̇ͬͅ ̬̘̀̿ͮ͐͘͏̵̵͈͎̆ͬͫͤ̓ͫ̈́͌̇ͦͪ̈́͢͜

Hazardous Environment Combat Unit BF

USD Poster of Resistance Organization