Josephina "Jo" LupoPlayed by: Erica Cerra
Another of the town's few non-genius residents. Jo is a tough, no-nonsense deputy of Sherriff Carter, with a love of all things “firearm”. She developed a relationship with Zane. Zane proposes to her in the Season 4 premiere. However before she can answer him, time is altered to where the two of them never dated, and in fact cannot stand each other. In the new timeline, she is Head of Security at Global Dynamics.
Zane: In any time line, I love you Jo.
Jo: I love you.