Why Is Two-Face So Easy to Manipulate?
https://dejareviewer.com/2018/03/06/why-is-two-face-so-easy-to-manipulate/
The Riddler and the Joker are able to sneak up on Two-Face and surprise him.share
Two-Face immediately attacks Riddler upon seeing him, and he attempts to attack Joker upon seeing him, although he is restrained. He later tries to grab Joker as soon as his restraints are removed.
Riddler and Joker are able to convince Two-Face that they are not his enemy, and they get him to do what they want him to do through subtle manipulation.
Two-Face asserts his control by deciding the fate of Riddler and Joker with a toss of his coin. Both times, it ends with them living.