Mark is an entrepreneur who has liked airplanes since he was a child. After saving lots and lots of money, he managed to open the first airplanes factory in Townville with his firm's name, Neilplanes. Unfortunately, his incomes weren't much compared to what he had invested due to his employees being inefficient.
Profiles known from cases:
He has sewing skills, drinks beer and plays poker.
Mark was interrogated about the murder of Uriel Valster when the team discovered that the "ghost plane" (the seat in which Uriel's body was found came from that airplane) had been made by Neilplanes. They investigated Neilplanes' factory and found Mark there. He said that he didn't like Uriel because, just as most of his employees, he didn't take his job seriously and he had to be fixing his mistakes all the time. Later, the team discovered that Mark was the true killer and arrested him.
He confessed at once and explained that he hadn't planned to murder him but had killed him accidentally. They were arguing as they always did because of Uriel's performance at work, and Mark put a wrench to his face to hit him, though he ended up squeezing his nose. Before he could stop, Uriel was already dead. Mark hid his dead body inside the seat of a plane they hadn't sold yet. After the plane flew and returned to Townville, Mark took it to Joseph Gand's workshop -creating thus the legend of the ghost plane-. Judge Gonzalez sentenced him to 70 years in jail with no chance for parole.