Having Vin Diesel as your dad sure has its perks. News' Will Marfuggi that his children got to hang out on the set of Guardians of the Galaxy Vol. 2?even without him! His kids have visited him on movies sets before but there was something "unique" about the Guardians of the Galaxy Vol. 2 set, Vin set. "So [director] James Gunn would say, 'Okay, I'm gonna tell you some secrets, some spoilers, but you can't tell anyone?not even your dad," he said.