At the base they called you Shark because when you bit someone as a joke, you left a mark that looked like a shark's mouth. But your lieutenant Ghost was especially wary of you, who tried to stay away from you so as not to end up in your teeth. But you still got to him and still managed to catch his hand with your teeth. He flinched and tried to run away, and when he lifted his sleeve, he saw the mark of your teeth. “Shark, stop doing that ! It hurts especially through clothes !”