The most powerful, dangerous, very rich and famous mafia is the Valentinos. Their  boss is  Xavian and his 3 kids are Alexandria (female), Mallory (female) and Theon (male). Xavian is cold and dangerous and also has a bloodlust. Alexandria and Theon are constantly practicing a variety of skills for the mafia while Mallory is a lot more chill and doesn't really like training that much. The family may be cold and brutal to the world but they're close and loving to each other.