<Ul> <Li> Will Forte as Philip Tandy Miller (initially known as "Phil" and later "Tandy"), an average, socially challenged man and seemingly the only human survivor after a virus wiped out nearly the entire population about a year earlier . He lives in his hometown of Tucson, Arizona, having already searched North America for other living people . In his pre-virus life, he worked dead - end jobs and lived in a studio apartment for which his parents paid the rent . Out of loneliness, he has adopted various sports balls as "buddies" and drawn faces on them . He has painted "Alive in Tucson" on billboards and highway signs during his trip, hoping others might see the message . Forte describes him as "a selfish person who sometimes borders on being a flat - out sociopath". Jacob Tremblay portrays young Phil, who appears to his brother Mike in multiple visions in the episode "Pitch Black". </Li> <Li> Kristen Schaal as Carol Andrew Pilbasian Miller, a notary from Delaware who sees Phil's "Alive in Tucson" sign and travels to Tucson . She pressures Phil to marry her so they can work towards repopulating the Earth with "legitimate" children . Carol is shown to be compassionate and is good friends with Melissa and Todd but can hold grudges and be stridently moralistic . Carol and Phil divorce in the middle of the first season, but Carol chooses to leave with Phil after he is banished from Tucson and they subsequently remarry . In the second season, Carol and Tandy are allowed to rejoin the group of survivors . She becomes pregnant with Phil's child after he finally tells her he loves her . </Li> <Li> January Jones as Melissa Chartres, a former real estate agent from Akron, Ohio who used to be married to the late Greg until he cheated on her with a police officer . She meets Phil and Carol after they crash their pickup truck into her limousine . She saw Phil's original "Alive in Tucson" sign and traveled to Tucson before Carol . Phil is initially very attracted to her and frequently vies for her affection despite having just married Carol, so Melissa does not like or trust him . She begins dating Todd after he joins the group . In the second season, Melissa decides she does not want to have children and breaks up with Todd, but when she changes her mind, she and Gail eventually agree to simultaneously date Todd . In season 3, Melissa kills Darrell, one of paranoiac Pat Brown's crew, and consequently starts acting strangely, ultimately forcing Todd to lock her in a focus - group room to stop her from jumping off a building . The survivors help cure her condition using Clozapine, and Melissa marries Todd near the end of the season . </Li> <Li> Mel Rodriguez as Todd Rodriguez, another surviving man who, while on his way to Mexico, finds Phil and company after he sees some fireworks set off by Phil . Kind and selfless, Todd's nature leads to him becoming the most likable member of the group, much to Phil's increasing annoyance . He and Melissa become very close and begin a romantic relationship shortly after they meet . In season 2, Todd's love life becomes increasingly complicated: he finds himself torn among Melissa, who breaks up with him for a while; Gail, who starts dating him simultaneously with Melissa; Erica, who tells him that the late Phil II chose him as a surrogate father for her baby; and even Carol, who approaches him with a surprise request to impregnate her when she thinks Phil (Tandy) is sterile . In season 3, when Gail breaks up with him, Todd hopes to win back Melissa until he is frightened by her strange behavior resulting from killing Darrell . He is eventually able to cure her condition using Clozapine and they get married . </Li> <Li> Cleopatra Coleman as Erica, an Australian woman and self - described "political nerd". After the outbreak of the virus, she met Gail at the White House and the two became traveling companions . They discover Phil upon spotting a fire he started, then move in with the rest of the survivors . In the second season, Erica becomes pregnant with Phil II's child but decides to not involve him in their child's life when he openly flirts with Carol . In "Smart and Stupid", she tells Mike, whom she is dating, that she was imprisoned for armed bank robbery before traveling to the United States and getting a job at the State Department under an assumed name . Toward the end of season 3, she gives birth to her daughter, whom she names Dawn . </Li> <Li> Mary Steenburgen as Gail Klosterman (recurring season 1; starring season 2--present), a chef and former restaurant owner from Wilmington, North Carolina . After the outbreak of the virus, she met another woman named Erica, and the two became traveling companions . Gail mentions having had a husband but does not reveal what happened to him . In the second season, she develops a relationship with another survivor named Gordon, but after Gordon dies of a heart attack, she has trouble finding closure and even dresses up a mannequin to look like Gordon, until she starts dating Todd . In the third season, she tells Carol, who wants Gail to adopt her so her child can have a grandmother, that she also had a child who died before the outbreak of the virus . To avoid being annoyed by Carol about their newly formed family, Gail finds solace in an elevator, but the elevator loses its power and traps her inside until Phil restores the power in "The Spirit of St. Lewis". She begins a romantic relationship with Erica during the six months after the episode "Name 20 Picnics...Now!" </Li> </Ul> <Li> Will Forte as Philip Tandy Miller (initially known as "Phil" and later "Tandy"), an average, socially challenged man and seemingly the only human survivor after a virus wiped out nearly the entire population about a year earlier . He lives in his hometown of Tucson, Arizona, having already searched North America for other living people . In his pre-virus life, he worked dead - end jobs and lived in a studio apartment for which his parents paid the rent . Out of loneliness, he has adopted various sports balls as "buddies" and drawn faces on them . He has painted "Alive in Tucson" on billboards and highway signs during his trip, hoping others might see the message . Forte describes him as "a selfish person who sometimes borders on being a flat - out sociopath". Jacob Tremblay portrays young Phil, who appears to his brother Mike in multiple visions in the episode "Pitch Black". </Li> <Li> Kristen Schaal as Carol Andrew Pilbasian Miller, a notary from Delaware who sees Phil's "Alive in Tucson" sign and travels to Tucson . She pressures Phil to marry her so they can work towards repopulating the Earth with "legitimate" children . Carol is shown to be compassionate and is good friends with Melissa and Todd but can hold grudges and be stridently moralistic . Carol and Phil divorce in the middle of the first season, but Carol chooses to leave with Phil after he is banished from Tucson and they subsequently remarry . In the second season, Carol and Tandy are allowed to rejoin the group of survivors . She becomes pregnant with Phil's child after he finally tells her he loves her . </Li> <Li> January Jones as Melissa Chartres, a former real estate agent from Akron, Ohio who used to be married to the late Greg until he cheated on her with a police officer . She meets Phil and Carol after they crash their pickup truck into her limousine . She saw Phil's original "Alive in Tucson" sign and traveled to Tucson before Carol . Phil is initially very attracted to her and frequently vies for her affection despite having just married Carol, so Melissa does not like or trust him . She begins dating Todd after he joins the group . In the second season, Melissa decides she does not want to have children and breaks up with Todd, but when she changes her mind, she and Gail eventually agree to simultaneously date Todd . In season 3, Melissa kills Darrell, one of paranoiac Pat Brown's crew, and consequently starts acting strangely, ultimately forcing Todd to lock her in a focus - group room to stop her from jumping off a building . The survivors help cure her condition using Clozapine, and Melissa marries Todd near the end of the season . </Li>

Who plays carol in the last man on earth