Complex sentence: The story is told through the narration of Buck's step-father, Grit, an old Vulture, voiced by Gal. Gal has said that Grit is based on Sam Elliott's character from the 1998 film, The Big Lebowski.
Split into simpler sentences: The story is told through the narration of Buck's step-father, Grit. An old Vulture, voiced by Gal. Gal stated that Grit is based on Sam Elliott's character from the 1998 film, The Big Lebowski.