So I'm a spider so what is so real for having an enemy nation deem a spider THATS LITERALLY PERFORMING HEALING MIRACLES a demon for political gain. This bitch out here curing cancer and some fuck off lords decided she's the perfect political plot peasants be damned.
Literally part of an evil organization, kills people, yada yada, but also she's HOT GIRL SHIT. Femme Fatale. Has tension with the protag's mom because they used to be besties before she faked her death, also tried to kill adifferent character's mom by forcefully kissing her and giving her experimental poison. (Sure, women poisoning women get to kiss, but none of the men poisoning men get to do that!!!) But also, she protects the protag from her evil organization because of her relationship to his mom, and protects his girlfriend because said girlfriend accidentally saved Vermouth's life when she was running from the cops.
Kumoko / Shiraori:
She has her own goals and values, we're on her side. She's absolutely ruthless in her path for power, kills people, and joined the apparently "evil" demon side. A mysterious plot with twists and turns like a rollercoaster, and a blank expression like. Yess girl, go on! Give us nothing, slayyy
When her whole class dies in an explosion she's reincarnated in another world as a weak monster spider in a dungeon (the rest of the class was also reincarnated, mostly as humans). She has to eat the other monsters to survive and evolve to become stronger with the goal of making it out of the dungeon. When she does finally make it out of the dungeon she saves a baby and accidentally starts a war to which her reaction is basically "Perfect, killing humans give more EXP than monsters so it looks like it's EXP farming time". Kumoko accidentally infects the Demon Lord with a part of her soul causing her to take on parts of Kumoko's personality and leading to them teaming up.
Sure she may have genocided almost every elf and caused multiple wars but she wants her girlfriend to be happy and her girlfriends dad is the leader of all eleves and has been for far longer than he should be sure she wants to kill half of the life on the planet she's currently on but because her girlfriend's pseudo mom is the core of the planet and she just wants her to live and so what if caused multiple wars she's saving the planet and she is definitely autistic