Does he get a senior citizen’s discount on capes?

On Monday, Syfy announced it has a new show in the works that will feature not Superman — but Superman’s grandpappy.

The series, to be called “Krypton,” is set on Superman’s home planet from which he rocketed to Earth. Audiences have seen glimpses of it in the original 1978 “Superman” movie and in last year’s “Man of Steel.”

Yes, comic-book properties are hot — but doesn’t the concept of this show seem like it’s pushing things a bit too far? Here are five reasons why it might not work out.

It’s a movie concept . . . being done on a TV budget

Quick, name a current TV series set in outer space. Anything?

There’s probably a good reason there are so few. Special effects and giant, otherworldly sets are expensive — and often exceed TV budgets.

The makers of “Krypton” are probably going to have to lean heavily on talky scenes between characters and forgo the big action set pieces that give audiences the full scope of this alien world.

Superman’s grandfather?

Everyone knows Superman. And most have at least a passing familiarity with his father, as a result of high-profile actors (Marlon Brando, Russell Crowe) playing him in movies. But Supe’s father’s father? Um, who is that?

Even in the comics, Superman’s grandfather has hardly warranted more than a few panels — and that’s in 75 years of continuous publishing.

The show’s writers seem to be developing a backstory out of thin air. The official description reads: “Years before the Superman legend we know, the House of El was shamed and ostracized. This series follows the Man of Steel’s grandfather as he brings hope and equality to Krypton, turning a planet in disarray into one worthy of giving birth to the greatest Super Hero ever known.”

No one will have superpowers

Will anyone watch a show about a superhero in which no one is, uh, super?

Superman only gains his special abilities as a result of exposure to the yellow sun around which the Earth orbits. On Krypton, no one can fly or see through walls.

The Krypton stuff was the most boring part of the movies

“Man of Steel” opened with a looong prologue set on Krypton, trying to define the planet’s politics, science, judicial system and weapons. Psst. We don’t care. None of that seemingly hour-long prologue added much to the story of Superman.

We know how this ends already . . .

. . . and it ain’t good. As everyone knows, Krypton is doomed to explode, which is why Superman’s parents send him to Earth. Will audiences invest in these characters, knowing nothing they do will matter in a few years?