Tommy Miller is Joel's brother and is a major character in both "The Last of Us" and "The Last of Us: Part II." Just like Joel, Tommy is Caucasian in the video game, but he's got another ethnicity in the TV show in the spirit of diversity and to line up with leading man Pedro Pascal. In the show, Tommy is played by Gabriel Luna, who is of Mexican descent. Jeffrey Pierce, who voiced Tommy in the video game, is also in the cast of the television series in the major role of Perry, an HBO original character who's not in the game.
In the video game, the brothers don't reunite until far into Joel and Ellie's cross-country journey. Currently, IMDb has Tommy slated to appear in all 10 episodes in the first season. While IMDb isn't always accurate on such matters, it is clear that Tommy will be a substantially larger character in the show than he was in the first game. Visually, Tommy looks quite different between the mediums; Luna sports a different hair color and style, he is clean shaven as opposed to sporting a full beard like he does in the game. Also, he is free from the scars and blemishes present on his digital counterpart, though that might change as the series progresses. His wardrobe is a direct match for the Tommy of the game with a fluffy collared jean jacket, and he can be seen using a sniper rifle, which is revealed to be a specialty of Tommy's in "The Last of Us: Part II."
