Complex sentence: Devil's Due Publishing and Image Comics introduced new elements into Snake Eyes' past during their "Snake Eyes Declassified" miniseries, which show more of Cobra Commander's motivation to kill Snake Eyes while training to become a ninja.
Split into simpler sentences: Devil's Due Publishing also introduced new elements into Snake Eyes' past during their "Snake Eyes Declassified" miniseries. These changes show more of the motivation of Cobra Commander's attempt to kill Snake Eyes while training to become a ninja.