Mini-Bruce
Damian despised the infantile monikers his "family" insisted on calling him. There was one name, however, that Damian minded somewhat less than the others: Mini-Bruce. While he naturally objected to the inherent slight in the first part, he could not logically deny that he was in truth smaller than his father (for now) and that grievance was balanced by the implication of similarity to his father. While he pretended aggravation simply to discourage the fools from growing comfortable with insulting him, the name sent a warmth pulsing through him not unlike the feeling he experienced after receiving praise from Grayson.
This kid kills me. In so many ways.
Anyway, I always thought that Damian had at least a little bit of appreciation for this particular nickname because he wants so desperately to be like his dad (naturally, he can't let anyone else know that).
I love him.