>>44296875Marnie barely has any presence in the story other than being generic waifubait whose only point of interest is something other than her, Team Yell, Spikemuth, and Piers. She doesn't have much of a personality beyond 'is nice' and otherwise might as well just be a female less annoying Hop.
Lillie has a timid and shy personality that appeals to waifufags, is constantly shoved down your throat, has romantic scenes with you, and is her own character for the most part even with Lusamine and the Aether Foundation. She also had the anime, much more shilling, and 2 games.