Aldrin
He's the boss. He created the company "Le Petit Dépanneur" ("The Little Mechanic") with his son, Shep, as space travel developped itself to the point of knowing a great age of "touristification". Draging along the most miscellaneous travelers having no idea of how to repair the cooling system of an E.B. 605 or what to do if your ventilation start to exhale odors of a forgotten camembert sandwich.
While he likes to repair stuff, it's mostly thanks to his crew that the company did not sinked under debts, as he might be the worst salesman ever sent into space.
He's specialised in repair in outer space, generally assisted with his son.