"Alright, shitheads.. You fucked around.. N̴̛̙̘̺̳̜̬̓͌̄̆̓͘̚͜ͅǪ̵̢̜͕͔̫̭̗̏̓͒W̶̢̼͋̒̈́̂͋͝ ̶̧̧̛̛͔̩͚͎̝̣̲͂̀͂̃̏͛̂͂̓̓͝͝Í̴̖̼̗̺̪̔̊̿͑͛̅̑̒͊̔͝ͅͅT̵͔͒̓̓̊̌̍̑̌̓̕͝'̵̨͇̣̗̰̖̬̗͙̗͐͌̌̌̔͑̉̄́̀̅͘̕S̷̢̡̜̗͈̙̱̗̲̹̹̼̆̀̌̈̀̀̐̚ ̵̤̜̘̰͚͉͔̖̜͓̫̣̌̌́̾̿̇̚̕Ṭ̴̫̝͉͉̘̖̗̙͔͖͌̑̽̎́̏͋̿̑̕ͅI̵͇͒́̑̅́M̴̳̫̩̝̂̃̓̂͑̀͆̊̉̚̕͝E̵̩̖͚̘̹͆ ̸̹̲͍̙̩̮̘̊̈͒͌͐̃̍̆̕ͅT̵̗̘̻̬̹̆̐͐͝͝ͅO̶̞̤̲̱͉͒̔͝͝ ̴̨̢̢̢̰̫͔͇͈̺̔̿̔ͅF̴̺͕͋̀I̵̠͈͎̩̯̘̯̞͎̞̋̉͂́͑͘N̷͚̘̻̟̥̜̰̜̳̄͗̊̉͗̍͜͜Ḑ̵̡͍͕̰̲̪̝̟̻̝́̽̌́̒͂̒̾̌͗̔̒̂̕ͅ ̸̥̣̦̄Ö̶͔̼̭̹̺̘̪̟̩͍̜̑͋̽͒̀͋Ű̸̢̡̧̪̲̗̼̺̱̳̺̜̣̜͆̃͆̔̇̂̑T̴̲̪̲̄̈̔̇̑͜ !!"

https://www.youtube.com/watch?v=jozqnG_32i0&ab_channel=OSTStation

When Jack's anger reaches its breaking point, he undergoes a horrifying transformation. The mark of Arioch overtakes his arm, transforming into a scaly purple appendage surging with dark power. His face becomes a wrathful bony visage, and where he had once lost his aura sensors as a Riolu, four hideous tendrils snake from the back of his head, able to stretch many times their length to eviscerate his unfortunate foes. 

In this berserk "Raging Shadow" state, he fights with terrifying ferocity, forgoing his sword and shotgun for his razor sharp claws, jagged teeth, and the blade-tipped tentacles from the back of his head. Unfortunately, he will also turn on anyone that isn't his target until he is somehow incapacitated.