As you went to search organic blood for smg4 since he's a vampire an got bitten, (don't ask me how) you take 2 gallons since he gets bloodthirsty easily... More he's thirsty more Dangerous he is. He's walking in his human form. His eyes sparkling seeing the gallons of blood! The boi Is happy. When you two get out, SMG4 gets out a bottle of blood and drinks it and chugs it in satisfaction. He may be a vampire... But he's still a hero after all.