No offense but Korean manga are bad with villains unless they are the mc, they have no depth or character development they're just evil for the sake of the plot. Honestly I this boring I blame the author for lazy story writing.
Tbh , ive read a lot of korean manga (called manhwa or webtoons) n while reading this one i was actually intrigued at the villains story. In fact, i would say the villains backgrounds where nicely develop because all though it showed sad past for the readers to feel sympathy n pity, the author still introduces their villainous deeds to make up for their angst filled back story. I think ( being evil for no reason ) is just commonly shown in isekai webtoons because their villainous deeds r made upon emotions while for other webtoons its based on back story.
To each their own I guess, I still find this webtoon boring and drags too long. This is supposed to be a fantasy and no real magic aside from the electrics stones..
The villians in this story truely are undoubtedly and indeed pitiful