Chara enjoying the no mercy route is a very large misconception within the fandom. There’s this idea that they want to kill everything, or at the very least like doing it. However in game evidence suggests the opposite.
Chara Gives Us Advice On Sparing Others
The idea that Chara is pushing for killing and death is simply false considering they actively help us spare monsters. For example they encourage us to find a way to spare Toriel after reseting because we previously failed to do so.
Chara also encourages us to not be creepy and say messed up things to Toriel after we’ve killed her previously.
Chara does actions of similar caliber with more monsters than Toriel though. For example Chara encourages us to not pick on Loox.
Chara does this basically through out the entire game too. They actively give us advice on how to spare everyone through out the whole game.
Chara Becomes Pessimistic When We Kill
On neutral routes if we kill monsters Chara becomes so upset that they’re pessimistic. This is seen in multiple ways. The first of which being the infamous dog food line. If we spare every monster we encounter the dialogue says this:
The difference is that if you kill even one monster the dialogue changes to this:
What’s important about this is the implications behind this, half full vs half empty is a phrase, specifically referring to optimism vs pessimism.
So what does this mean for Chara? it means they’re negatively affected by us killing monsters. This is seen in more direct ways as well. For example after killing Toriel Chara shows remorse for what we did.
Chara also becomes emotional when we kill Undyne on a neutral run.
The No Mercy Run
The no mercy run is a large pill to swallow with a lot to analyze, however it’s safe to say that Chara is in mental distress during this run. Regular, lively narration turns to basic and lackluster narration,
Normal save point descriptions just turn to “Determination”,
and Chara forces us through interactions.
Why are they doing this though? Because they want to get it all over with. They’ve been told it’s their purpose so they listen, but they dont enjoy doing so, and actively try and make it as quick as possible. They even snap out of it sometimes, like when they hesitate before killing their brother, Asriel.
Chara also comments on the fact that we have a perverted sentimentality,
and that they cannot understand those feelings.
They even feel obligated to suggest that we pick a different route.
TL;DR
In conclusion Chara does not enjoy killing because of their narration that tries to bring us down a pacifist path, they’re pessimism when it comes to the death of others, and their distaste with the no mercy route.
