- You may be looking for the species of the same name.
Mr and Mrs Pakoo were two avian humanoids who were guests on Platform One to watch the Sun burn the Earth in the year 5,000,000,000. They looked almost identical. They survived the near destruction of Platform One, but mourned the loss of others like the Moxx of Balhoon. (TV: The End of the World)
The Pakoos, along with the other survivors of Platform One, were later kidnapped by the Elth of Balhoon, who believed they hadn't tried to help the Moxx of Balhoon and had abandoned him to die. They were rescued by the Tenth Doctor and not only forgave the Elth for kidnapping them, but offered to help him. (COMIC: Reunion of Fear)