I have a question; why would Logan's family give William the reigns over giving them to Logan?? William proves himself to be more robicidal than Logan and he falls in love with a robot just before marrying the family's hieress. WTF??

I'm beginning to think William/MiB didn't marry Logan's sister. Logan's family's business in Wm/MiB's first visit is only ever referred to as the Company. I think Wm/MiB started his own company, Delos (which is awfully close to the name Dolores, BTW), married someone else and had a daughter, named Charlotte. Charlotte seemed very familiar with MIB, the suggestion that golf would be better for his back. It sounded like a daughter's exasperation with a father who needed a newer safer hobby.

I don't fully see the MiB as a villain. Death for the Hosts in WW is not the same for humans in the real world. Death is temporary and it in some Hosts seems to lead to higher consciousness (even more so when accompanied by trauma). When the MiB drags Dolores away she has just suffered the loss of her parents and she is in great distress. If the MiB kills her now her suffering ends and she can begin her loop which is very pleasant in the beginning. Killing her is a release from her current suffering, an act of mercy.