Violet and Blaze seem to have feelings and emotions in Season 1, but are total sociopaths in Season 2. Why? In Season 1, we only see them in the comic, when they're following the plotline their author has laid out for them. The script tells them what emotions to experience, including empathy. But when they start trying to get out, they aren't following the script anymore. They're on their own, and without someone to supply them with empathy, they're left as what they are: ink on paper, unable to emote.
If Omen is from the world of the comic book, than how was he able to inflict the comic's presence on Lance and Cally in the first place? And why does he have his own counterpart in the comic in Season 1? And why would he do it, since it provides Blaze and Violet with a portal into the real world, through which they can reclaim him?