These days the only way that Nicktoon Crossovers have been able to happen has been in the form of video games, the last time it wasn't in the form of a video game was in the form of the last of the Jimmy Neutron/Fairly Odd Parents crossovers, thus leading to a number of missed opportunities since then. With that being said, a lot of people have believed that there should be a HD Remastering one of these years of Nicktoons Unite in particular, of which I happily agree with. One thing's for certain with these crossover video games is that there's no Nicktoons character that can't be in them, even if their shows had long wrapped up.