She has better teeth.

Bellatrix at least is crazy, Umbridge is just horrible

Bellatrix could be kind and care for those important to her (Narcissa, sort of Andromeda, Voldemort etc) but Umbridge didn't have anyone unless you count the tiny crush she had on Fudge.

Bellatrix loved Voldemort and Narcissa. Therefore, she killed for love. Umbridge is just crazy!

In terms of personality both were awful people. Umbridge was a liar and she tortured innocent children. Bellatrix tortured countless people such as Neville's parents, killed many people, and she wanted Voldemort to gain power which would've caused a lot of pain and suffering. And her feelings weren't really love, it was more of an obsession.

I prefer Bellatrix but what she did to the Longbottoms makes her a monster.

Both did horrible things, but Bellatrix at least did them for a cause. Umbridge would serve anyone who could give her just a little power.

She's better in all aspects. ^_^