Talk:Frisk/@comment-14382970-20160102012135/@comment-27560522-20160111225538

When Chara died - they were fused with Asriel - it could be why when Frisk came into contact with Chara, their soul gains some monster traits, such as the inability to persist after death.

I'm sure that when Asriel turned to dust in the flower garden,Chara's being turned to dust along with him - their combined essence was spread since they died as one being. Actually - that could explain why Flowey/Asriel didn't melt when Alphys injected his dust essence-covered flower body with determination - his monster/human hybrid dust must have prevented that.

Note when Chara has fully possessed Frisk by the end of Genocide - Asgore mistakes them for a fellow monster...

In a sense, it seems Chara and Frisk's merged being shares a bit of Asriel's essence, while Asriel shares a bit of Chara's.