(I assume you mean Delores Umbridge from HP, if so) Krell was infinitely worse. Umbridge was arrogant, sadistic, and had a similar superiority complex... but she didn't actually go out of her way to kill members of the student body in the hopes of pleasing the dark lord. She tortured students even breaking the laws she was supposedly sent to enforce, but Krell was willing to(and did) personally murder the clones after he was caught. They're both despised characters but Umbridge was an opportunist villain... Krell is pure evil scum in Jedi robes.
Between him and Umbridge I dont know who I hate more.
Both deserve a lot worse than what they got.
(I assume you mean Delores Umbridge from HP, if so) Krell was infinitely worse. Umbridge was arrogant, sadistic, and had a similar superiority complex... but she didn't actually go out of her way to kill members of the student body in the hopes of pleasing the dark lord. She tortured students even breaking the laws she was supposedly sent to enforce, but Krell was willing to(and did) personally murder the clones after he was caught. They're both despised characters but Umbridge was an opportunist villain... Krell is pure evil scum in Jedi robes.