Roderick is a male companion.
Roderick is a completely optional character that can be acquired in Novos. He claims he once had a body of his own and ruled a realm of the underworld.
He can only be romanced by a Female protagonist though there is functionally no romancing involved and can be accomplished without any amount of affection.
He will agree with you in any instance of any morality check you make increasing his affection. It is unknown what changes if any this makes.