Complex sentence: While "Dinobot Island" is mentioned in Season 3 by an irate Galvatron, while hunting after Octane for stealing Trypticon from it, it is in fact, the last time it is heard of.
Split into simpler sentences: While "Dinobot Island" is mentioned in Season 3 by an irate Galvatron, while hunting after Octane for stealing Trypticon from it. It is in fact, the last time it is heard of.