Louis Massina — scientist and entrepreneur, proprietor of Smart Metal, deeply religious; lost his arm in a motorcycle accident as a young man; never remarried
Chelsea Goodman — project engineer at Smart Metal; young, genius at math, petite, creative
Trevor Jenkins — FBI special agent in charge of anti-ATM theft task force; hardworking, always wears a suit; could use a haircut and shave
Johnny Givens — young, athletic FBI agent on Jenkins’s task force
Gabor Tolevi — first-generation American of Russian and Ukrainian descent, raised mostly in the Ukraine where he served in the army. Now an “entrepreneur” with connections to Russian mafya, though not a member of a family; widower and single father
Boston & suburbs — birthplace of freedom, hardscrabble values, great Italian food
Crimea — peninsula in Black Sea annexed by Russia in 2014 from Ukraine
Donetsk — major city in southeastern Ukraine, center of struggle between Russian-backed separatists and Ukrainian government; under Russian domination
Bot — Smart Metal slang for robot that can function to some degree on its own, in contrast to mechs and industrial robots designed for specific, stationary tasks such as welding or chip making; Smart Metal constructs all types
Mech — Smart Metal slang for robots that are preprogrammed for specific tasks but retain more flexibility than industrial robots
Autonomy — ability of bot or other entity to “think” or make decisions without direct commands from operator