Hank // Brawl Stars

Perhaps Hank has PTSD - post-traumatic stress disorder. The place of battle, judging by the description, was the kitchen, for shrimp are a culinary delicacy, and Hank is one of them, and it seems that he saved his brothers and all sea life from there. After he saw all this horror that was being done to his relatives, he was traumatized, and these terrible memories of this haunt him to this day.

Hank is most likely a military man or was. This is proven by his numerous phrases, a green helmet and a playing card, the presence of a fugu tank and the ability to control it.