TLA was a masterpiece so it's impossible to live up to that standard.
However the end of season 1 with the murder/suicide on the boat was fucking metal as shit. can't believe they let that air on Nickelodeon. Glad they did though
They didn't show any of it, but near the end of season 3 when combustion eye lady blew herself up was also pretty crazy. Everything is left to imagination and it's not pretty.
Don't forget him taking the fucking air our of the Earth Queen's lungs and killing her. And the fact that the Earth Queen ate her fucking dad's bear. ---