A young and capable S.G.C. technician, Simmons is one of the original gate operators. He has also had a long-standing crush on Samantha Carter.
Simmons has also assisted in the S.G.C.'s initial mission analysis of various items brought back through the gate. Proximity to one of these devices, an alien orb, infected him and the rest of the base with an alien pathogen. Others were given tetracycline to stop ebb the virus -- but Simmons is allergic to it, and lay untreated. This threatened his life, but he managed to survive the experience.
Simmons did not appear for nearly four years, possibly implying that he was transferred off the base and then back. When Anubis attacked Earth's Stargate, Lieutenant Simmons was assigned to determine why the Goa'uld was able to maintain a stable wormhole for more than 38 minutes.
PLAYED BY -
Tobias Mehler
FIRST APPEARED -
KEY EPISODE(S) -
Message In a Bottle - Lieutenant Simmons is infected with an alien virus, and nearly dies because he is allergic to the only thing Dr. Fraiser can find to hold back the virus.
Redemption, Part 1 - After nearly four years away from the S.G.C. (or at least off-screen), Simmons returns.
