I suppose you could say Nidhiki's death is tragic-he was supposed to be a hero but became more concerned with his own self-interest-but it's kind of hard for me to see it as anything besides long overdue comeuppance. Of the others, I would say Krika's death is the most tragic, since at the end he tried to do something good at the end of a lifetime of evil but failed miserably. Matoro, Lhikan, and Jaller all died to save the lives of others which, while sad, doesn't really strike me as tragic-except in the sense that they had to die for others at all due to Makuta's evil. Some tragic deaths that come to mind for me: The Toa Mangai (besides Lhikan, Tuyet, and Nidhiki) These poor guys didn't even get the chance to be characters-they were a plot device for all intents and purposes, because Lhikan needed a team outside of two power-mad traitors. Only one of them has even been given a name, and they died being picked off one by one after being sent to their doom by an enemy who disguised himself as a friend. And on top of it, when Greg revealed his big deus ex machina for various deceased characters not being dead after all, he worked in a way to exclude them. The Toa Cordak Their story is much the same as that of the Mangai-only one of them besides the one we actually got a set for was given a name, and even she was barely a character. I would say that their death perhaps isn't quite as tragic as that of the Mangai, if only because they fell in the line of duty as opposed to being assassinated by a Dark Hunter, but it's not by much when you consider what became of the Matoran they had protected and their sole surviving teammate Lesovikk. Karzahni (the Being-and may I say how annoying it is to have to clarify that?) As one who appreciates a little villainous variety to a franchise, Karzahni's death saddens me because he was featured in a single book one year, returned as a a serial-exclusive antagonist the following year and was quickly taken out of the picture by the established main antagonist of the franchise, and was then killed off in another serial because things had gotten too cluttered. He might has well have bitten the dust back in 2007 if they were going to do that to him. From a character standpoint, Karzahni's whole history is somewhat tragic. The Great Beings created him and his brother and then made them fight over a mask designed to help them to create-how fighting prowess equate to worthiness for something like that? Upon loss of said battle, Karzahni was then dumped into a domain with with the purpose of repairing and/or retraining Matoran, but his creators kept up their poor judgement streak by apparently not telling him how to do his job. Then, as if he didn't have enough issues, the other inhabitants of the universe expect him to do the job he doesn't know how to do, and instead of trying to figure out why he's apparently having problems decide that he can't be trusted to do the job anymore. Is it any wonder that he went bonkers?