Eclipse was always known to be the Villain in everyone's story, but he's only been expressing to you and Earth that he's trying to redeem himself..or something close to it. Ever since Evil Sun taught him how to bring back Solar, he's been planning to go away to a different dimension forever. But the catch is, he wanted you to come with him. Since he seems to like your company I guess? Sure, he acts like he hates you in public view but in reality he tolerates you :)