 What seems to be the Scorpion's motivation?
CALL HIM NEMESIS By DONALD E. WESTLAKE Criminals, beware; the Scorpion is on your trail! Hoodlums fear his fury—and, for that matter, so do the cops! There was Mr. Featherhall at his desk, refusing to okay a personal check from a perfect stranger. There was Mrs. Dolly Daniels, withdrawing money from her savings account again. One of the others took the pistol away from Mister Anderson, the guard, and said to him in a low voice, "Think about retirement, my friend." The third one, who carried a black satchel like a doctor's bag, walked quickly around behind the teller's counter and started filling it with money. The man who had first spoken herded the tellers, Mr. Featherhall and the customers all over against the back wall, while the second man stayed next to Mr. Anderson and the door. She fell unconscious to the floor, and all three of them ran out of the bank to the car out front, in which sat a very nervous-looking fourth man, gunning the engine. Then, after the getaway car had gone more than two blocks, it suddenly started jouncing around. "What I can't figure out," said Stevenson, "is exactly what made those tires do that. "Still and all, it's nutty. Except that in the trunk lid the owner had burned in 'The Scorpion' in big black letters you could see half a block away."
 They hate criminals and work as a vigilante, punishing people as they see fit.
 They want people to know their name and fear them, hence leaving their mark at every crime.  They are indiscriminately attacking people in various situations.  They hate criminals and work as a vigilante, punishing people as they see fit.  They want to cause trouble because they are actually The Scorpions, a group of juvenile delinquents.