Thirteen years after he was killed on 9/11, firefighter Scott Davidson’s sense of humor lives on in his son Pete, who made his debut as a featured player on “Saturday Night Live” reports The New York Post.

At Ladder 118 in Brooklyn Heights, Scott, who was born in Brooklyn but grew up on Staten Island, immediately earned the nickname “Salty Dog.”

“It’s an expression you give the old-timers because he had a day on the job and he acted like he had 20 years on the job,” said retired firefighter John Sorrentino, who described Scott’s sense of humor as “brutally honest.”

He was a cut-up, but he took parenthood seriously. Scott — all 6-foot-4 of him — doted on his son and daughter Casey.

Davidson was just 7 years old when his father, 33, along with five brethren raced across the Brooklyn Bridge to the burning Twin Towers.

The six made it to the Marriott World Trade Center Hotel, where they were seen running up the stairs to help terrified guests. It was their final act of heroism — the hotel was destroyed when the towers collapsed.

At 20, Davidson is the youngest “SNL” featured player. He was discovered at the age of 17 by Nick Cannon, who co-hosted a radio show with him and gave him a part in the movie “School Dance.” He has also appeared on “Jimmy Kimmel Live!” and “Brooklyn Nine-Nine.”

“He never once used the fact that his father was fireman who died on 9/11 to help him get through any doors. Peter earned everything he got and he deserves his shot on ‘SNL,’” Sorrentino said. “And he’s funny.”