Who is Sinon from The Neutronium Alchemist Conflict and what is their importance?

Sinon is Syrinx's father. He is merely a memory..... a part of the habitat multiplicity. Sinon volunteers for the Mortonridge liberation mission, which leads to his personality being inserted into one of the Tranquillity serjeants. He has immense faith that the Edenists will find an answer to the problems posed by death, the beyond and possession.