A scene during the battle between Voltron and Yorak involving injury was omitted - when about to be struck by the Blazing Sword, Yorak has been attacked in the limbs but not the stomach, yet sports a hole there from some wound, inflicted apparently without being seen, as the Sword is being formed.
Yurak is one of the only two named characters in Voltron whose death is not omitted (from the original Japanese version). The other one being Commander Kio during the Vehichle Explorer season. Although it could be argued that Yurak was said to be a robot after his Robeast conversion (the throwaway line "Let's trim this robot's ears), he was not depicted as a robot in any prior episodes.