Guy Lockard, who told fans on Twitter that his favorite part of working on "Chicago Med" is interacting with the kids who play his young patients, has a pretty impressive history as an actor. However, let's start with one of his most pertinent previous jobs. If he looks familiar to fans of the One Chicago universe, that's because he made a cameo on "Chicago Fire" in 2020. One Chicago Center reported that he played the role of Lewis, a "frustrated father" who was looking to create change in the fire department.

This makes him the second "Chicago Med" actor to play more than one role in the universe. The other was S. Epatha Merkerson, but there is a caveat to her double casting. She previously appeared in "Law & Order," which NBC determined takes place in the same world. Speaking of "Law & Order," Distractify reported that Lockard also landed appearances on both "Law & Order" and "Law & Order: SVU." Basically, he has to be one of the best connected actors in the saga's history. 

Lockard has an extensive connection with the NBC, the network that hosts "Chicago Med," too. He was part of the cast of both "The Village" and "The Blacklist" (via Deadline). The actor's resume includes additional appearances on "Gossip Girl," "The Affair," and "Gotham." That last one definitely gives him something to talk about with fellow newbie Kristen Hager.