Slade and Nightwing from the Teen Titans had their hairdo's switched in Young Justice. In Teen Titans Nigthwing had the long hair and Slade had short hair In Young Justice Slade had the long hair and Nightwing has the short. I personally reeeeaaallly wanted to see Dick Grayson from Young Justice with long hair. Anyone else?
Very much meant to. Slade from the Teen Titans cartoon is based on the same DC Comics character that Deathstroke in Young Justice is. Basically they're just different universe versions of the same guy (Slade Wilson)
Not exactly, as they aren't technically the same character. In the Teen Titans cartoon series they never really showed Slade (who is based on Deathstroke)'s face, but in the comics they've shown Deathstroke's face a lot since his creation in 1980.