Seeto's father is a navigator; his mother is on the Idenna's civilian Council. Unusually for a quarian, Seeto also has an older sister who joined the Rayya's crew after her Pilgrimage. It is possible, therefore, that Seeto was born during a period when the prohibition against single births in quarian families had been lifted.
Unfortunately Seeto never gets the chance to go on his own Pilgrimage. He is part of the security detail sent to meet the Cyniad when she returns to the Idenna, not realising she is carrying a Cerberus strike team. Seeto dies along with his comrades when Golo and the other Cerberus operatives storm the ship.