The Guardian Angel relied on the power of data to put criminals in jail and give the government a fair trial to the people. The Guardian Angel that people know was not someone who easily takes lives or seeks revenge. The Cerberus also has the same mindset and agrees not to take a human's life recklessly.
Their way of taking revenge or punishing evil people differed significantly from Anxia, who wanted revenge by killing everyone who hurt her. That's why Richard tried his best to make Anxia reconcile with her past and not think back on her revenge plans. After all, if Anxia managed to kill Michele or anyone she wanted to kill, she would never return what she had lost.
In contrast to Anxia, whose hands were dirty and filled with human blood, Richard's hands were still clean as he had never taken someone else's life from his own hands or others.
