Big Jesus Mordino and his son Lil' Jesus Mordino are the heads of the Mordino crime family in New Reno. Big Jesus is a large, sweaty man with small, beady eyes. He and his son were once Reno slaves, until they managed to turn the tables in their favor and emerge as the rulers of one of the biggest crime families in the City of Sin.
The Mordino family controls all jet production and most of its distribution and sales in the Core Region, thanks to the "acquisition" of Big Jesus' pride and joy, the genius Myron.
Big Jesus will attack the Chosen One if they speak to him while Myron is accompanying them.
The Chosen One can use any sort of stat-modifying drug (including Nuka-Cola, which doesn't actually do much!) to trigger a fatal heart attack in Boss Mordino, which results in a 1000 XP bonus and prevents the Mordinos from taking control of Reno in the end.