Warning: Contains Spoilers For Peacemaker.
There's a reason why Murn (Chuckwudi Iwuji) went rogue in Peacemaker against the Butterflies. Murn, the lead in ARGUS's black ops mission Project Butterfly, is a Butterfly himself as revealed in episode 4, «The Choad Less Traveled.» Episode 3, «Better Goff Dead,» reveals that the Butterflies are a parasitic alien species invading the entire world, potentially by the millions. Project Butterfly is clearly targeting these creatures, but clues hint that their complete annihilation is not necessarily the only objective. At the beginning of Peacemaker episode 4, Emilia Harcourt (Jennifer Holland) tells Peacemaker (John Cena) that "it would've been nice to have captured it" when Peacemaker tells her that he shot a Butterfly. It's of course later revealed that he kept the Butterfly alive in his own home, keeping it in a jar and feeding the Butterfly its special Glan Tai nectar. At any rate, it's implied that Project Butterfly also intends to study the Butterflies more closely. However, Murn might actually know all there is about the Butterflies, unless his parasite wouldn't reveal any discreet information.
Murn being a Butterfly adds a few complications to the story — including several intriguing questions. He's a proper leader for the team, demanding everyone to stay on task even in the face of doing extremely difficult and morally questionable things for the mission. Despite opportunities to sabotage the mission and betray Amanda Waller (Viola Davis) for the betterment of his kind, his actions strongly suggest that he's a Butterfly gone rogue. While Murn's secret still risks a Peacemaker Butterfly plot hole, it appears evident that people infected with the Butterfly parasite still
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