The Greatest American Hero

The suit that Ralph receives from the aliens.

Ralph's uniform grants him the powers of flight, super strength, invulnerability, invisibility, precognition, telekinesis, X-ray vision, super speed, pyrokinesis, shrinking, psychometry ("holographic vision"), and even the ability to detect the supernatural. As Ralph lost the suit's instruction manual, his discovery of these different powers often come as a surprise even to himself. Notably, while the suit enables Ralph to fly, it does not endow him with any particular skill at landing, so he frequently crashes in an undignified (though uninjured) heap. In the episode "Fire Man" he displays resistance to fire/heat and uses "super exhalation" (the ability to blow out a flamethrower, or any other large source of fire); he also uses this ability in the episode "There's Just No Accounting ...", to extinguish a Molotov cocktail. Ralph also shows signs of being able to control minds after he is exposed to high doses of plutonium radiation. In the season two final episode, "Lilacs, Mr. Maxwell", Ralph is shown to control a dog via a hologram. This may have been an improvisational power of the suit, but is not tried again in later episodes. In "The Shock Will Kill You", he (or the suit) becomes strongly magnetized.

In the season two episode "Don't Mess Around with Jim", Ralph and Maxwell learn they are not the first duo who received such a uniform. Jim "J.J." Beck had received the suit, and Marshall Dunn was his partner, much like Ralph and Maxwell operated. But Jim was overwhelmed with the power of the suit, and he used it selfishly and for ill-gotten gains, until the aliens discovered this and took the suit away. It is unknown whether or not there were others before Jim who were visited by the aliens. In "Divorce Venusian Style", the pair meet one of the aliens, whose world was apparently destroyed (which hints as to why the aliens want to protect humanity) and calls Earth one of the few remaining "garden planets". Ralph is given another instruction book during this encounter—supposedly the aliens' last copy, but he loses it as well. When he shrinks to a fraction of normal size, he places it on a large boulder which is actually a grain of sand given his reduced size, and forgets to pick it back up before returning to normal size.

In the episode "Vanity, Says the Preacher", it is also revealed there are several humans in seeming "suspended animation" aboard the aliens' ship (Bill speculates that they are possible replacements for them).

Hinkley's hero persona never receives an actual "superhero name" either, although Joey Scarbury sings the Elton John song "Rocket Man" in the pilot. In the pilot episode, Ralph sarcastically refers to himself as "Captain Crash" in reference to his terrible flying ability; and later "Captain Gonzo" in the episode "The Shock Could Kill You".

Like his character, William Katt found the suit very uncomfortable and hated wearing it. Producers made various modifications to the suit to help him, and accommodated him by scheduling filming so he would not have to wear it all day during a shoot.[2]

On the Season 1 DVD, Stephen J. Cannell notes that the symbol design on the front of the suit is actually based on a pair of scissors that he had on his desk during the design of the uniform. He said that the costume designer asked him what he wanted the suit's chest emblem to look like. He said he had not really thought about it. The designer then picked the scissors up off the desk, held them upside down, and said "That's your emblem". Cannell was fine with that decision.

Red Dragon mahjong tile

The symbol on Ralph's uniform resembles the Chinese character for "center" 中. As the symbol is red in color with white background, Hong Kong television station TVB titled the Cantonese-dubbed version of the show Fēi Tīn Hùhng Jūng Hahp (飛天紅中俠), meaning "Flying Red Center Hero", in reference to the red center mahjong tile. An alternate translation of "jūng" in Cantonese is "justice", which gave the other meaning for the title of the show "Flying Red Justice Hero". This alternate translation of the show title allude to the mandate by the alien grantor to use the suit as a means to fight crime and injustice in the world.

The symbol's bilateral symmetry seemingly avoided the "backward S" problem encountered on the Adventures of Superman. For the low-budget 1950s series, editors would on occasion "flop" stock footage of George Reeves in flight, causing the "S" shield to appear reversed. However, in many Greatest American Hero composite flying sequences, Ralph wore a watch and the timepiece alternates from one wrist to the other, especially during extended flying sequences.

The main character's name was originally Ralph Hinkley, but after the assassination attempt on Ronald Reagan by John Hinckley, Jr., on March 30, 1981, the character's last name was hurriedly changed to "Hanley" in two episodes. In "Here's Looking at You, Kid", aired within days of the incident, this was accomplished by overdubbing dialogue (i.e. "Hinkley" to "Hanley") whenever the character's last name was spoken aloud. This was the ONLY episode in which the name "Hanley" was spoken aloud; for the rest of the abbreviated first season (which only lasted 9 episodes), the character was generally referred to as either "Ralph" or "Mister H". The only other instance of the use of the name Hanley was in episode 9, "The Best Desk Scenario," in which Ralph is given a promotion and his own office space, and we see the name "Ralph Hanley" on the door plaque. By the season 2 premiere "The Two-Hundred-Mile-an-Hour Fast Ball" (the very next episode in viewing order), the show's producers returned the character's surname to the original Hinkley.

The theme song (and variants of it) have been used frequently outside of the show. "Believe It or Not" was composed by Mike Post (music) and Stephen Geyer (lyrics) and sung by Joey Scarbury. The theme song became well known during the show's run. "Believe it or Not" debuted in the Top 40 of the Billboard Hot 100, peaking at No. 2. It also peaked at the No. 1 position on the Record World chart.

The powers of the red suit were somewhat general, but still were similar enough to the abilities of Superman that Warner Bros., the owners of DC Comics, filed a lawsuit against ABC. Warner Bros. Inc. v. American Broadcasting Companies, Inc. was ultimately dismissed.[3] However, the series has more inspiration owed to another DC property, Green Lantern, in that it shares the basic concept of an ordinary human being given a powerful weapon granting extraordinary abilities by extraterrestrials, including the later appearance in the series of an alien who is loosely reminiscent of the Green Lantern Corps' administrators, the Guardians of the Universe.[4] It also shares the same concept of another DC property, Starman, in that it shares the basic concept of an ordinary human being is given a red costume, and given a powerful weapon granting extraordinary abilities by extraterrestrials. The series is also very similar to Nova from Marvel Comics, in that it shares the basic concept of an ordinary person attending school being given a powerful weapon granting extraordinary abilities by extraterrestrials, including the later appearance in the series of an alien who is loosely reminiscent of the Nova Corps' administrators, the Xandarians. The concept was also very similar to Frog-Man, a former supervillain, and now one of Spider-Man's allies, as well as the superhero by the name of Ant-Man, Scott Lang (all three of them, also created by Marvel Comics), to which a non-superpowered person attending school is given a red costume that grants them extraordinary abilities and superpowers to fight off crime and bring evil to justice.

In the pilot episode, while Ralph ponders whether to accept the suit, he observes his son watching the Super Friends cartoon. Batman is heard to say, "We need one more Super Friend who can fly!" In a later scene, having yet to convince Pam he really is a superhero, Ralph jokes, "Look at it this way. You're one step ahead of Lois Lane: she never found out who Clark Kent really was." In "Saturday on Sunset Boulevard", Ralph needs to change his clothing quickly. Seeing a telephone booth, he grumbles, "No! Never!", but ends up using it. Later, while Ralph struggles to get changed in the back of Bill's car, Bill notes "We need to get you a bigger phone booth."

During 1986, the original principal cast reunited for a pilot movie for a new NBC series to be named The Greatest American Heroine,[12] which did not result in a new series, and the pilot was never broadcast by NBC. Ultimately, the pilot was re-edited as an episode of the original series (complete with original opening credits and theme), and added to syndication sets of the original series aired on several local television stations in the late 1980s, for which it is the final episode. Immediately after the beginning credits, the episode's title card is superimposed over a nighttime view of the Los Angeles skyline, reading "The Greatest American Hero" before appending the letters "i n e" individually to the sound of the NBC chimes. The chimes were a nod to NBC and its president, Brandon Tartikoff, who had expressed interest in reviving the series.[13]

The pilot movie reveals that, several years after the final episode, Ralph's secret identity was finally revealed to the public, resulting in his becoming a celebrity. This angers the aliens who gave him the suit, and they charge him with finding a new hero to wear the costume and use its powers for fighting evil. Once the transfer is made, they explain, all memory of Ralph's exploits will be purged from the world's memory and remembered only by Ralph, Pam, and Bill.

Bill begins their search by researching people with desired hero qualities, but Ralph finds a young woman named Holly Hathaway (Mary Ellen Stuart), an elementary school teacher who spends her off-hours time looking for lost kittens, raising environmental awareness, and serving as a foster mother. Bill, Pam, and Ralph meet in the desert, where Ralph tells Bill about Holly. He reacts visibly to his new partner being a "skirt" before Holly arrives, flying in wearing a new version of the suit made for her, and she pledges to help Bill. The original trio say their final farewells, and even the stoic Maxwell reveals his true emotions as he says goodbye to Ralph and calling Pam a trooper—"...one of the best!" Holly reacts emotionally to the fond farewells, but breaks the somber mood as she accidentally pulls the door off of Bill's sedan.

The rest of the episode deals with Holly learning how to use the suit with Bill Maxwell's guidance, and the pair trying to develop a working relationship. It ends with Bill overhearing a conversation between Holly and her foster daughter in which Holly refers to Bill as a good person. Bill is then shown speaking into a recorder he uses as his "diary" to suggest that maybe Holly is the right person to wear the suit after all.

On August 29, 2014, Deadline Hollywood published an article reporting that the Fox Network had ordered a pilot for a new version of the show.[14] The pilot was to be produced by Phil Lord and Christopher Miller, both of whom wrote and directed The Lego Movie.

Deadline reported on September 8, 2017, that Rachna Fruchbom and Nahnatchka Khan will produce a female-led remake for 20th Century Fox TV and ABC Studios. The suit will be donned by Meera, an Indian-American woman.[15] Actress Hannah Simone was cast as the lead for the reboot.[16]

On February 12, 2018, Simone was announced as the lead in ABC's reboot;[17] however, ABC declined to pick up the series.[18]