Biff Roberts is an agent with the CIA.
First off, Biff is not his given name. If it had been, someone might have needed to talk to his parents. Such a talk might still be called for because his real name is Buford Cavendish Roberts V. No wonder he was happy to go with Biff.
He is an extremely experienced operative, one who is held in considerable respect by his peers and his superiors. That degree of acceptance was earned "after forty some years as a CIA field officer under diplomatic cover. He'd had enjoyed a distinguished career dating back to the ill-fated Bay of Pigs operation in '61, the only blot on his record. Since then it had been a success story, a solid string of accomplishments. Many considered him the CIA equivalent of a 'rock star'. Unfortunately, his 'cover' had not been a well kept secret since his stint in Vietnam in the mid-sixties. Nevertheless, he continued to play 'spy games'. He'd never retire. He loved every minute of his job. And, he had moved a long way up the ladder. Biff aspired to the rank of director, then the DCI. He was 'a driven man', some said."
Many such driven men have little else in their lives but not so with Roberts. He has been very happily married for 30 years to Mary Beth and the devotion they have for each other has only increased over the years. He has two children grown or nearly so; a son named Boo who is a student in a prep school, and a daughter named Caroline attending ASU as the star pitcher on the Women's Softball team.
Other pieces of information of some interest include the fact that "his colleagues admired him. The 'rain maker', 'mover and shaker', the 'real deal" were appellations accorded him good naturedly. Biff's signature grin, characteristic of his inherent good nature, and stellar performance record assured him of being universally held in high regard. Once one became acquainted with his accomplishments, and him personally, they could not help but be impressed."
All this makes him sound like a jovial, good-natured, even-tempered individual, not someone who would be a real threat if cornered or pressured. That is most definitely NOT the case. In the recorded adventures that we have of him, he shows over and over that a man of his experience, even considering his age, is not someone to mess with. Especially if his family is threatened.