Board Thread:Questions and Answers/@comment-28898329-20160901162911/@comment-25104255-20170106233114

So essientially, no matter who Chara was before your determination revived them, your killing spree increased their LoVE, causing them to be willing to kill far more than they would have before.

(Also, by "Blank Slate", I mostly meant they were like Flowey was when he first awoke, except we had the ability to keep them from becoming a monster by NOT increasing Chara's LOVE, or turn Chara into a monster by maxing out their LOVE.)

Finally, though your points are valid, I feel the need to continue the discussion by mentioning that if Chara tried to suppress their depression (such as laughing or smiling it off), eventually, well....

It gets tiring. You can only hide it for so long, and once you stop, the result is often anger. It's a lot of speculation, I know, but if Chara didn't want Asriel to know how depressed they really were, they probably would have tried to act happy, until they couldn't take it anymore, lashed out at Asriel, then, regretting it, commited heroic suicide to end the suffering, in a way that would help the only people that ever loved them....

Sorry. I talk too much. :p