it's during the scene when Engineer saw Scarlett's dead body and got really mad
he used his First Soul of Unity's power and impact (it's the First time appearing of the First Soul of Unity when everyone got shocked) and destroyed the earth, also transformed into E.N.G.I.N.E.E.R stage 1 to beat that villain from EngineerTale S2
Computer had to take on his "Window Updating form" and King Fictionverse had to take on "Emperor Conqueror Form" to stop those impacts destroying the reality of the entire storyline