Starfire looked at Slade when he asked the question. “The Slade from my world seems to have an interest in Robin.” Of course, Slade was kind of mysterious to Starfire. Even his intentions seemed to be a mystery to her and the other titans. All she really knew was that he had a specific interest in Robin. That is to say his appearance is similar to this version of Slade, but still a little different. 

(Yeah, sorry for Starfire's rather short explanation of Slade. I'm just too busy with a school assignment right now to come up with something better -.-)