Origin
Hired by Dr. Allison Mann to be a research assistant.
Creation
Sunil was created by Y: The Last Man writer Brian K. Vaughan and penciller Pia Guerra.
Major Story Arcs
Unmanned
Sunil helps Dr. Mann impregnate herself and does all her prenatal checkups. When the time comes for delivery, Sunil takes Dr. Mann to the hospital and sits by her side during labor. Just as soon as the baby is born, all men, including Sunil, die.