Synonyms to his nibs

big time operator, BMOC, activist, ball of fire, beaver, big cheese, big noise, big shot, big wheel, big-timer, bustler, busy bee, doer, eager beaver, enthusiast, go-getter, high-muck-a-muck, human dynamo, hustler, live wire, man of action, man of deeds, militant, new broom, operator, political activist, powerhouse, take-charge guy, wheel, wheeler-dealer, winner, Rasputin, Svengali, VIP, access, bad influence, big boy, big gun, big-time operator, bigwig, chief, court, eminence grise, five-percenter, friend at court, good influence, gray eminence, heavyweight, hidden hand, influence, influence peddler, influencer, ingroup, key, kingmaker, lobby, lobbyist, lords of creation, man of influence, manipulator, open sesame, powers that be, pressure group, sinister influence, special interests, special-interest group, the Establishment, very important person, wire-puller, notable, Establishment, acclaimed, appalling, arrant, astonishing, baron, big, big bug, big