I shook my head. "You really are dumber than you look. But I can fix that." I looked around at the approaching gang members and started by turning their knives into rubber toys. Then I made all the gang's shoes lock to the pavement, including the leaders, and changed the shoes into restraints they could not pull free of. The gang swayed and yelled as they were suddenly immobile. "You guys have too much anger, too much testosterone." I take away all of their extra muscles and weight, reducing them to skinny young men with clothes that were bagging on them. Then they blinked and gasped as acne scarred their faces, and their clothing changed to plain T-shirts and jeans. The leader's eyes widened as he started to wheeze, straining for breath. I created an inhaler and handed it to him. "You have asthma. Nothing life-threatening, but you'll need the inhaler for a few more years."
By now even the leader was wide-eyed in terror, and they all whimpered. I released them from the pavement, and they staggered loose and then backed away. "From now on none of you will be able to tolerate cigarettes, alcohol, illegal drugs of any kind, and most importantly, violence. You can protect yourselves, but you'll never start a fight again."
The once fearsome gang of thugs now looked like a frightened Geek Squad. I smiled. "Now run home like good boys before I get really creative."