Before the Cylon attacks on the Colonies, Lampkin was an attorney with the Caprica CityPublic Defender's Office; earlier in his career, he had worked for the same office under Joseph Adama, father ofBill and grandfather of Lee. On the morning ofthe attacks, he was about to board a shuttle leaving Gemenon, having retrieved Lance, his wife's cat, from a vet there, and thence escaped with the ragtag fleet. After former President Gaius Baltar is recaptured by Colonial forces halfway through season three, the government decides to try him for crimes against humanity. Lampkin accepts appointment as Baltar's attorney after the first attorney is murdered by bomb. An attempt on Lampkin's life follows, again by bomb. A hospitalized and drugged Lampkin admits kleptomaniacal habits to Lee, and in the collection of items that he has "borrowed" during his time on Galactica is what Lee recognizes as a military-issue explosive detonator. Lampkin "borrowed" it from Aaron Kelly, who is thus revealed as the bomber. Lampkin is portrayed as ethically sketchy, using deceit and manipulation to learn useful information. During Baltar's trial, a few weeks after the bombing, he makes exaggerated use of a walking-stick, discarded as soon as the verdict comes in. He typically wears dark sunglasses, implicitly for purposes of reading and observing those around him without giving anything away himself. Nevertheless, he risks his life for the good of others; for example, helping Starbuck get Samuel Anders to the infirmary during Felix Gaeta's mutiny. In "Sine Qua Non," when Lee again enlists Lampkin's help, he is revealed to have had a wife and daughters, who were killed in the attacks. Despite his complaints about Lance, the cat has been his last link to his family, and when his shipmates kill Lance, he suffers a brief psychotic break and considers murdering Lee. Lee talks him down, and to replace Lance, gives him wardship of Jake, a dog who is regarded as a hero of the New Caprica resistance. During Felix Gaeta's mutiny, Lampkin is called in as Adama's defense attorney in his court martial, though both know that it is only a show trial. Lampkin attempts to convince Adama to play for time, but he refuses. After Adama is found guilty and sentenced to execution, Lampkin is led away, possibly to his own intended execution. However, he is able to kill the Marine escorting him with a pen and escape. Though at first reluctant to help, Lampkin helps Starbuck get the severely wounded Samuel Anders to Dr. Cottle. During the attack on the Cylon Colony, with Roslin and Lee joining the strike force, Lampkin is made President of the Colonies in their stead. After the planet the Colonials dub Earth is found, Lampkin is shown planning for the future and is last seen leading a group of survivors.
