I like this theory where Tucker's mind could have merged with Carain's during his journey via Mæron. I even think that would explain the hallucinations and visions. Could the mascot be a personification of Carain's mind that merged with Tucker? Could the visions actually be memories of another person? I think the next update will bring us some answers regarding this. I really never tire of how you think (although it's a bit confusing sometimes).