Roman is an original character who first appeared in Bonnie's and Shel's Story in Telltale Games' The Walking Dead: 400 Days DLC.
An unknown person (presumably Dee from Bonnie's story) steals medical supplies from Roman's group. He, Clive, Shel, and Stephanie give chase and search the cornfield with flashlights to try and find the suspect. Roman can be heard shouting to Stephanie throughout their search to see if she found anything yet.
Roman resides at Gil's Pitstop with Shel, Becca, Stephanie, and the surviving cancer support group members Boyd, Clive, and Joyce. In the diner, they watch Becca give a guitar performance and then proceed to work. Roman feeds a walker chained to a pole outside, telling Shel that at least they can be "put to good use", as they would react to human intruders.
Later, Roman has a man blindfolded whom Clive claims they caught stealing supplies. Stephanie and Boyd try to vouch for him, stating that they can find a way for him to be useful. Clive and Joyce disagree with them, saying that they don't need any new additions to the group. Shel, being the only one without any input, is pushed by Roman to decide the intruders fate. If Shel decides to let the man go, Roman tells him that if he ever returns he'll wish he died that day. If Shel decides to kill the man, Roman is the one to shoot him but says that if something similar were to happen again, Shel or Boyd will have to handle it.
23 days later, Roman catches Stephanie trying to escape with some of their supplies. Feeling betrayed, he locks her in a trailer. Roman, then, goes to inform Shel of this and says that they have to kill her with the rule being that anybody who knows of their location can't leave/be trusted.
Roman tells Shel that she has to take care of the situation - if Shel agreed to keep the previous intruder alive, Roman states that Shel's decision was wrong and it cost Boyd's life, now she has to pay for it. If Shel decided to let Roman kill the intruder, Roman reminds Shel of the agreement that was made. Though many attempts at trying to convince him to keep Stephanie alive, Roman still disagrees.
Roman lets Shel explain the situation to Becca beforehand. If Shel decides to take off in the RV with Becca, Roman is last seen shouting for them to come back. If Shel decides to go through with the execution, Roman apologizes for it having to be this way and then escorts Shel to the van.
Sometime later, Shel and Becca end up joining a new group of survivors consisting of Vince, Russell, Bonnie, and Wyatt. Though Roman's fate is unknown, when Tavia shows up to their campsite to offer them a place in her community, Becca states that Roman could possibly be there and even if he was still searching for them there is nothing he could do to them there. Wyatt responds by saying that there's no way he could still be looking for them, and that there was no one left at Gil's Pitstop, with Russell also saying that they don't need to worry about Roman.
"All That Remains"
It is unknown how Roman got separated from his group and when he joined a new group in the woods. After Clementine's first night with the cabin group, she, Nick, and Pete travel to the fish traps, where they find Roman lying dead on the ground, after being shot in the head, along with several other bodies. Nick believes they were killed by Carver, but no conclusive evidence is found.