The Mandalorian Guild is a nomadic clan made up of warriors with various backgrounds. Family is not defined by blood but rather by our common culture. We do not necessarily align ourselves toward good or evil, we migrate to where the most money is to be made. We welcome all members without concern of gender, species, background, race, age, etc. as long as members are willing to abide by the Resol'nare, or Six Actions, central to the tenets of Mandalorian life. The Resol'nare consists of wearing beskar'gam (armor), speaking mando'a (the language), defending yourself and your family, raising your sons and daughters as Mandalorians, contributing to the clan's welfare, and when called upon by the Mand'alor (leader), rallying to his cause.
If you desire your hero/heroine to become a member of our family of warriors, simply tell them join the "Mandalorian" guild. For largest chance of success, send the command while your hero is "'outside of town"' and is idling (i.e. not fighting a monster). Do NOT cancel your current quest first. Once they finish their special quest, they will be brought into the guild as a fellow brother/sister Mandalorian with all rights and benefits of the guild shared with them.
Mandalorians in general are fierce warriors. The men as well as the women will fight when the need arises. Children, both boys and girls, are taught how to fight at a very young age. Being a Mandalorian warrior does not dictate that we are evil or shed blood unnecessarily. Several of our brothers and sisters are accomplished healers, inventors and farmers. However, all Mandalorians will come to arms when the need arises.
Family does not necessarily mean a blood relationship. It is not unusual for the children of a fallen Mandalorian warrior to be adopted by another Mandalorian and raised as his/her own child. Fellow male warriors are often referred to as brothers and female warriors as sisters. This is where the Mandalorian phrase "Vode An" (Brothers/Sisters All) comes from.