This art has some references to Katana Zero's poster

Charging Attack

Gman yeti

Hazardous Environment Combat Unit BF

war correspondent Paci Perkins

Otis Zombie

USD Poster of Resistance Organization

m̵̶̴̛̬̗̯̟̰̪̱͙͉͇̉ͩ̎ͩͫͫ̌̏̃̃͢͠ǫ̴̛͕̗̣͔̗̩̞̘͈̺̥̎ͩ̐̄͒̋̆͊͊͠͠͡g̷̨̢̨̯̫̙̖̱̼̮̮̹̥̦̦̫͛͆ͤͩ͌̆͆͋̒̌̕͘͞͞͝e̡̖̩̜̮̪̳̪͚̩̙͋̓̇́ͦ̒̈́̎̆̓͜͡-̶̡̢͇̤̣̹̼̼̦̯̻͗͆ͨ̎̄̇͐̓ͨͩ̋͝k̶̢̡̧̯̹̱̭̣̩̼̠̟ͣͤ̄̈̆̇̐͒ͯ̐͆͋͜͝o͇̲͍̦͇̞̹ͮͯ̊͂ͬ́̑̓̓͜͝͝͏̘̠̙̗̋ͫ̓ͬ̔͐̓̍͆̉ͦ͢v͈̤̳̪̲̩͎́ͫ̔͛̂͋̿̌͛̇̊̋̑͒̊͛̇ͬͅ ̬̘̀̿ͮ͐͘͏̵̵͈͎̆ͬͫͤ̓ͫ̈́͌̇ͦͪ̈́͢͜

Attack animation

Barney Zombie