No Ladies
Unfortunately, it's true that women are excluded from the club. However, any lady with direct ties to the Hells Angels also has the protection that's offered to internal members. So, if you're an Angel, your wife has the same security detail that you do.
Pagans
The Pagans began as a nonviolent club. However, in the 1970s, leader John "Satan" Marron got the club inveigled with organized crime. Despite their small membership, they are considered one of the most dangerous motorcycle clubs by the Bureau of Alcohol, Tobacco, and Firearms. The Pagans are still around, and they have increased their membership exponentially since their conception.