Board Thread:General Discussion/@comment-27023843-20160702213248/@comment-32182236-20171031110050

Yes, they wanted Asriel to absorb their SOUL, so they could cross the barrier together, gather six SOULs, and free monsterkind. Whether or not they planned on destroying the rest of humanity, we may never know, and Chara was somewhat messed up even during this time period-They just weren't PURE evil, they still had (somewhat) pure intentions-They were more like Asgore, or Undyne-Someone who was "evil" because they thought they were doing the right thing. They would become purely evil AFTER their death.

Also, we knew the reason why they climbed from the beginning-It's because they hated humanity-That's what Asriel says DIRECTLY after the line you quoted.

Chara is the only true villain in Pacifist, but in Genocide, there are TWO villains:Chara and Frisk.