Game Pirates Battle Invincible Scorpion

I’m not totally against game Piracy and I understand why it exists just wondering every ones thoughts on CROTEAMS Invincible Scorpion Character in SERIOUS SAM BFE
that shows up in cracked versions of the game.

Just wondering how this was done …not really trying to start a debate on Game Piracy
just wondering about the coding involved and how the game knows its a cracked version etc