Yarrow worked together with Ramie on the Ash Twin Project on Ash Twin itself and appeared to manage the project in some regard and worked as mediator. A lot of messages can be found of him there. They showed sympathy to Pye and Idaea when their task at the Sun Station failed. They was together with Clary and asked her on a date to the White Hole Station and were in love since. They looked forward to what knowledge could be gained by the new comet The Interloper.
Their remains are not found at the Ash Twin Project but may be outside the Ash Twin teleporter to get there. There is a Nomai Statue in the project's core.