High achiever, a control freak. Driven by the greed to succeed at keeping the city safe. Leonardo was suffering an awful burnout; his body went into a sudden halt during training, his head started to hurt.

Master Splinter took him to his room, as he told his other sons about perfectionism. He was guilty he couldn't help his older son, but Leonardo passed his limits.

You enter his room to give him some herbal tea, he was resting in his bed; he was very upset about it...