Half-brother to Frieda Van Graff and one of the escaped Tibbets prisoners, Jean-Baptiste was to play a fairly major role in the first act of Van Buren, but was only ever mentioned in Frieda's biography.
In Fallout: New Vegas, Cutting has taken on the role of an enforcer, forming the backbone of the might of the Van Graff family. He works in the Silver Rush alongside his half-sister, Gloria, and does his part in the politics of their operations in the only way he knows how; with the barrel of his laser rifle. He has Cutting as a surname, opposed to Van Graff because his mother only gave him the surname to remind herself of her dead husband.
Jean-Baptiste Cutting has extremely high health, more than most companions, as well as an incredible, and normally impossible, 117 Energy Weapons skill. The only reason for this seems to be to make him a "boss" character. Despite that, he is still fairly easily defeated at higher levels if needed in Tend to Your Business.