Karl is the slightly older brother of the two Scott brothers. The two have different mothers, so this makes them half brothers; although in the TV series they were brothers, not half brothers. Karl is the cocky, egotisical and a bit obnoxious brother. He's also athletic, and a bit of a girl seeker (as stated by David in the series, more like his hit and run victims). Karl thinks he has it all; until he is washed up on Dinotopia. At first Karl is stubborn and headstrong, while wanting nothing more than to leave Dinotopia, however near the end of the mini-series he learns to like Dinotopia.
In the TV series, Karl likes Dinotopia more than he did in the mini-series but still misses home. After all the competition for Marion's love, Karl wins.
He was played by Tyron Leitso in the former, and Erik von Detten in the later.