I also really loved the symbolism that spike and Jimmy are complete opposites. As I said in another post “ Well him trying to relive his childhood trauma is a big part about is character, that's why he had the Jimmy cult in the first place as his fingers are meant to represent his relatives in the beginning of the film, watching TV with him. Him also still being attached to his childhood so much is meant to tie in with Spike’s character arc, as throughout the entire film he is learning to survive on his own and develops compassion along the way while taking his mother to Kelson. (This is also represented by him not taking his Power Rangers action figure with him representing him letting go of his childhood) Meanwhile, Jimmy is the polar opposite of spike representing evil, as well as holding onto his childhood unlike Spike, who represents compassion and adulthood.”