Right, resuggesting this in the absence of any other suggestions since it got mixed 'reviews' last time >.> Anyhow, as copied from my previous suggestion, both are the main antagonists of their respective games and both have a three-form boss fight. Furthermore, both are interacted with minimally throughout their respective games (when I say interacted with Majora, I guess I mean Skull Kid). Both have the ability to curse others, and both are interacted with at the end of their respective games where Link must stop a ritual they are performing (Vaati draining the Light Force from Zelda, Majora bringing the Moon down on Termina). Additionally, both can take possession of others, and both do so to achieve their grand plans. Also, just as a fun fact, Majora's first form is VERY unhumanoid and