Michael Beach: Jesse (Manta's Father)
Jesse (Manta's Father) : [to David] You need to live, so you can kill that sonofabitch!
Jesse (Manta's Father) : [holds up a dagger to his son] This was your grandfather's. He was one of the first black frogmen in World War II. He was so good at what he did that he got the name Manta. However, when the people he worked for didn't appreciate him enough, he went back to the sea.