John Jason Harriman II, the son of Starfleet Admiral John "Blackjack" Harriman, was a human male in Starfleet in the late-23rd and early-24th centuries. He rose through the ranks rapidly, in part due to his father's influence, eventually being assigned command of the newly commissioned USS Enterprise-B in 2293. Despite a rocky start, he became one of the most well-regarded captains in the fleet.