No, Slade and Robin are not related. If 你 read the comics 你 would understand 更多 of the Teen Titans. Slade and Robin are not related in both Comics and TV Show
No, he isn't but what your probably thinking of is when Slade says he could be like a father to Robin, this is actually just a threat from Slade.
Also, Robin's last names Grayson and Slade's is Wilson, so from this 你 can tell they are NOT related and if they are it's from WAY in the past through like one person and that doesn't count.
