The Terran counterpart of Paul Stamets, a ruthless scientist whose mycelial reactor powers the ISS Charon while corrupting the entire network, and who betrays Emperor Georgiou to Gabriel Lorca.
The mirror Stamets appears in Vaulting Ambition and What's Past Is Prologue. He is first met inside the mycelial network, where his mind has been trapped alongside that of his prime counterpart after an accident of his own making.
He helps the prime Stamets find the way out, and both wake. Back aboard the Charon he is revealed as the designer of the vast spore reactor at the ship's heart, which is draining and infecting the network and would in time destroy life in every universe.
A former ally of Lorca, he sides with him again during the coup. Lorca has no use for a man who has already betrayed him once and has him dropped into the reactor.