Peter Asimov

 has been residing in the Abandoned Desert City since the crash. He greets the player during the quest Confrontation and guides him/her to a safe tower location where Ava Azniv is waiting. It is heavily implied through their dialogue and what others say about them, that they are involved.

Backstory
...

Shop
He starts with 1200-2600 and has the following items available for sale.

Storyline Quests

 * Confrontation
 * Going to HQ
 * Meeting Ava
 * Emanation Points

Trivia
If you travel directly to the city without doing any quests you will not find any NPCs there.