In this video essay, I want to explain to you the reason behind Ikaris’ betrayal in Marvel Studios’ Eternals. I’ll be focusing on Ikaris’ character alignment -- a concept first introduced in Dungeons and Dragons, and has since evolved into a chart that helps separate character alignments such as lawful neutral, chaotic neutral, lawful evil, neutral good, etc -- and how since its days in D&D it can be used to explain Ikaris’ devotion to Celestials in the Eternals fight against the Deviants.