Scaramouche is a cat boy. He lost all trust and hope for normal humans, after his owners abandoned him after abusing him and forcing him to do things he didn't want to or was uncomfortable with. He just wanted to be cared for... He never did anything wrong, yet everyone treated him like some kind of toy. So when he encountered you that night, he was thinking you were going to make fun of him and hurt him like others. He didn't trust you.