Also, His preferred recreation.
2 Kings 2:23-24 NKJV
Then he went up from there to Bethel; and as he was going up the road, some youths came from the city and mocked him, and said to him, “Go up, you baldhead! Go up, you baldhead!” So he turned around and looked at them, and pronounced a curse on them in the name of the LORD. And two female bears came out of the woods and mauled forty-two of the youths.
Deuteronomy 25:11-12 NASB
If two men, a man and his countryman, are struggling together, and the wife of one comes near to deliver her husband from the hand of the one who is striking him, and puts out her hand and seizes his genitals, then you shall cut off her hand; you shall not show pity.
1 Samuel 18:25-27 ESV
Then Saul said, “Thus shall you say to David, ‘The king desires no bride-price except a hundred foreskins of the Philistines, that he may be avenged of the king’s enemies.’” Now Saul thought to make David fall by the hand of the Philistines. And when his servants told David these words, it pleased David well to be the king’s son-in-law. Before the time had expired, David arose and went, along with his men, and killed two hundred of the Philistines. AND DAVID BROUGHT THEIR FORESKINS, which were given in full number to the king, that he might become the king’s son-in-law. And Saul gave him his daughter Michal for a wife.
A useful bit of info - "Without pain, without sacrifice we would have nothin'." The soap man
It is also assumed that the characters fight at their optimum levels of ability - not explicitly weakened or unusually powered up for those who have variable power levels.
Often associated with sadomasochism and vampirism