Main Silverhawks

• Commander Stargazer (voiced by Bob McFadden) is a tough and grizzled old police officer with bionic capabilities, he captured Mon*Star several years ago prior to the start of the series and had him imprisoned. Older than the other SilverHawks, he longs to return to Earth for either a vacation or for retirement. Stargazer chiefly serves as the SilverHawks "eyes and ears", keeping them apprised of their current situation. His first name is apparently Burt. In the SilverHawks' first adventure, Stargazer is depicted as the keeper of Tally-Hawk who subsequently was teamed with Quicksilver. His armor is gold, covering the upper left portion of his head as well as his body, and his left eye has been replaced by a telescopic lens. Stargazer wears a white button up shirt, loosened necktie, suspenders and slacks, making him resemble a stereotypical plainclothes police officer.
• Quicksilver / Captain Jonathan Quick (voiced by Peter Newman) was the former head of Interplanetary Force H and is the field leader of the SilverHawks. Known for his quick reflexes (and even quicker thinking), Quicksilver is an accomplished tactician and athlete. His armor is silver in color.
• Bluegrass (voiced by Larry Kenney) is second-in-command of the SilverHawks and the chief pilot of the group as well as a cowboy at heart. Bluegrass is the only active SilverHawk who cannot fly, but he is the one that pilots the team's vehicle the "Maraj". He uses his weapon/instrument (portrayed in the toyline as his weapon-bird with the name Sideman) and his lasso. Bluegrass has an interface with the Maraj's piloting system, which he has affectionately dubbed "Hot Licks". His armor has a blue-silver shade, and he wears a red bandana around his neck and a cowboy hat.
• Steelheart/Sergeant Emily Hart and Steelwill/Sergeant Will Hart (voiced by Maggie Wheeler and Bob McFadden) are fraternal twin siblings. They became Steelheart and Steelwill respectively when they joined the SilverHawks. Steelheart and Steelwill had artificial hearts implanted during their transformation. Their armors are both a dark steel color. Steelheart and Steelwill are the "gearheads" of the team. Due to an empathic bond when one sibling feels something, the other feels it as well. Physically, they are the strongest members of the team.
• The Copper Kidd (vocal effects provided by Pete Cannarozzi) is the youngest member of the SilverHawks and the only one not from Earth. A mathematical genius from the Planet of the Mimes, he "speaks" in tones and whistles. The Copper Kid's skin is blue except for white markings on his face that resemble the makeup of a mime. His armor is copper-colored but the wings have a silver-like appearance similar to those his teammates. A natural acrobat, the Copper Kidd has two razor-edged discs (one mounted on each hip) which he throws like Frisbees. At the end of each episode, he was quizzed in astronomy lessons by Bluegrass as training to become the reserve Maraj pilot (a role he later infrequently filled).

Minor Silverhawks

• Hotwing (voiced by Adolph Caesar in earlier episodes, Doug Preis in later episodes) is a gold SilverHawk who was added mid-season. He is a magician and skilled illusionist. Hotwing received his powers from a mystical energy force that "chose" him to bear the powers to fight against injustice. He has to recharge these powers every 14 years, otherwise he will die. One notable time was when Zeek the Beak tricked the mystic force into giving him these powers which would have resulted in Hotwing's death.
• Flashback (voiced by Peter Newman) is a green time-traveling Silverhawk from the far future. When he meets the 'much older' Stargazer who tells him of the fateful day the SilverHawks died, Flashback travels back in time to save them from an exploding sun. He also traveled back in time to stop Hardware from destroying the SilverHawks (when the mad inventor sabotaged the Maraj during their hyperspace-sleep to Hawk-Haven from Earth, which would have caused the autopilot to fly them straight into the sun).
• Moon Stryker (voiced by Larry Kenney) is a turquoise Silverhawk. He can propel himself through space by a powerful cyclone generated from propellers that emerge from his waist. He is cocky but an expert marksman, as demonstrated when he shot a pen out of Stargazer's hand when they first met in the episode "Battle Cruiser".
• Condor (voiced by Bob McFadden) - An old ally of Stargazer whom Condor calls "Gaze". Condor left the SilverHawks to become a private investigator before the series, but eventually returned. Instead of wings, he has a jetpack and his main weapon is an energy whip.

SilverHawk's Fighting Hawks

The Fighting Hawks are hawk-like partners of the SilverHawks who have different abilities that help them in their fight against the Mob and other villains.

• Tally-Hawk is Quicksilver's Fighting Hawk who is partly metal and partly real. Its beak can tear through metal and can shoot lasers.
• Side Man is Bluegrass's Fighting Hawk who plays music and fires lasers.
• Rayzor is Steelheart's Fighting Hawk whose wings can cut through metal.
• Stronghold is Steelwill's Fighting Hawk who can lift anything that is heavy.
• May-Day is Copper Kidd's Fighting Hawk with sonic-based abilities.
• Sly-Bird is Stargazer's Fighting Hawk who can photograph and record anything.
• Gyro is Hotwing's Fighting Hawk with spinning abilities.
• Backlash is Flashback's Fighting Hawk who can also travel through time.
• Tail-Spin is Moon Stryker's Fighting Hawk.
• Jet Stream is Condor's Fighting Hawk.

Federal Interplanetary Force

The Federal Interplanetary Force is an interplanetary organization that have their headquarters on Earth. They are responsible for the creation of the Silverhawks and have helped out whenever Stargazer contacts them for help.

• General Rawlings (voiced by Larry Kenney) is the leader of the Federal Interplanetary Force
• Professor Ghemakain is an unspecified alien that is responsible for making the weapons for the Silverhawks.
  • Nurse Mabis (voiced by Maggie Wheeler) is a nurse who works for the Federal Interplanetary Force and is the assistant of Professor Ghemakain.
• Brigadier Brightlight is a high-ranking member of the Federal Interplanetary Force.

The Mob

The Mob is an organized crime group and the primary antagonists of the series that commits crimes throughout Limbo and operate from Brim*Star. They travel in three open-cab spacecraft called the Zoomer, Road Star, and Limbo Limo.

• Mon*Star (voiced by Earl Hammond) is the quintillionaire alien crime boss and "Planet Master" who escaped from his cell on Penal Planet 10. He appears as a feline muscular humanoid with dark hair streaked with red over all the body, a voluminous red mane and beard, and an eyepatch (with the symbol of a black star) covering his left eye. Whenever he utilizes beams from Limbo's Moon*Star and the use of his Transformation Chamber, Mon*Star's body becomes encased on spiked armor-plating as he recites "Moon*Star of Limbo, give me the might, the muscle, the menace, of MON*STAR!". In this state, he temporarily regains his left eye with it able to fire the crimson Light Star beam which has various effects, destructive and stunning. Mon*Star has some bad blood with Stargazer due to their past conflicts and extends that animosity to the SilverHawks. Mon*Star appears in all but two episodes (episodes number 15 and 45) where Hardware and the Bounty Hunter are the villains respectively.
  • Sky-Runner - A giant "space-squid" that serves as Mon*Star's mode of transportation. One of Mon*Star's beams is responsible for making rideable armor appear on Sky-Runner.
• Yes-Man (voiced by Bob McFadden) is Mon*Star's all-purpose lackey, thrall, sycophant, or some combination thereof. As his name suggests, he is Mon*Star's half-human half-snake sidekick who only ever agrees with Mon*Star. As a member of Mon*Star's Mob, Yes-Man operates the Transformation Chamber. Yes-Man once used the powers of the Moon*Star alongside Mon*Star but did not change form. The Moon*Star primarily gave him increased mental abilities and ambition. This led to a feud between himself and his boss until the powers faded.
• Hardware (voiced by Bob McFadden) is the weapons specialist for Mon*Star's Mob. He is an extremely intelligent, short but bulky, light, purple-skinned pink-haired creature who carries an oversized rucksack full of self-engineered weapons and equipment called a Roll-Up Bag. Mon*Star considers Hardware his most dangerous minion because of his talent for invention. On one occasion when Mon*Star was recaptured, he had to use the Moon*Star to empower a box that would enable Mon*Star to escape from Penal Planet 10.
• Melodia (voiced by Maggie Wheeler) is a musical mistress who serves as a nemesis and counterpart to the SilverHawks' Bluegrass, Melodia is the only female member of Mon*Star's Mob. Melodia is usually seen cruising around in the Limbo Limo, causing havoc and assorted acts of terror as diversions. Melodia almost always carries a musical synthesizer (called a "Sound Smasher") as a weapon. She is usually dressed in an exaggerated rock-singer outfit: two-shaded green hair; a short black dress; red belt with plug-up battery pack for "Sound Smasher"; long red fingerless gloves; half dark purple, half light pink tights; and dark blue glasses with a red 'music note' frame.
• Windhammer (voiced by Doug Preis) is an eco-terrorist member of Mon*Star's Mob with a large tuning fork that enables him to manipulate or generate destructive weather patterns either on a planet or in space. Examples of the weather that he has manipulated have included lightning and tornadoes. He is a muscular humanoid with azurine skin, long blonde hair, and large elf-like ears.
• Mo-Lec-U-Lar (voiced by Doug Preis) is a molecule-themed shapeshifter whose primary form is a humanoid body composed of many spheres in various copper shades. He serves as the master of disguise and leading hitman of Mon*Star's Mob. Besides shapeshifting, Mo-Lec-U-Lar once became invisible in order to infiltrate the SilverHawks' base.
• Buzz-Saw (voiced by Bob McFadden) is a sentient war machine of a light copper-shade. Buzz-Saw has razor-sharp circular saw-cutting blades over his body that can be used as projectile weapons. He speaks with a high-pitched metallic voice.
• Poker-Face (voiced by Larry Kenney) is the robotic sunglasses-wearing money man of Mon*Star's mob who has slot machines for eyes and carries a cane decorated with playing card suits. He is the owner of the Starship Casino. Poker-Face always charges Mon*Star billions for new inventive ideas against the SilverHawks.
• Mumbo-Jumbo (voiced by Peter Newman) is a copper-skinned robotic Minotaur who is the muscle for Mon*Star's Mob. He is aided by his ability to "bulk up", growing larger and more muscular, increasing his strength by doing so. He speaks in metallic grunts which his associates seem to understand (though he usually pronounces Mon*Star's name properly) and appears to be on the low scale of the intellectual spectrum. His signature attack is a quadrupedal charge at an opponent. Mumbo-Jumbo is the sworn enemy of Steelheart because of Steelheart's strength and skill which takes him down easily.
• Timestopper (voiced by Larry Kenney) is a cocky 14-year-old juvenile delinquent nyctophobe with a chest device that has the ability to suspend all ambient motion and kinetic energy around him for one Limbo-Minute. He is often in the services of Mon*Star, but has no qualms about getting in his way if he isn't paid for the job. His nyctophobia is most likely from the fact his chest device is light-powered.
• Zero the Memory Thief (voiced by Peter Newman) is a long-nosed shady character who steals memories using a cattle prod-like weapon and records them on cassettes. He occasionally did business with Mon*Star's gang when the opportunity suited him. While he can steal memories, he cannot the memorized data the way his victims can.
• Smiley is a mummified boxer robot that is brought back to life by Poker-Face. He was once stopped by Commander Stargazer. Smiley is the heavyweight champion of Limbo. He is operated by remote control. In the Starship Casino, Smiley easily defeats both Mumbo-Jumbo and Buzz-Saw, but later, he could not beat the SilverHawks.
• Darkbird (portrayed by Peter Newman) is an evil duplicate of Quicksilver who was created by Hardware.

Three Outlaws from Fence

They appear in many episodes and are friendly to Melodia and Poker-Face, though the three are usually betrayed by the Mob. They are often seen playing cards at the Sini*Star Diner on the planet Fence:

• The Space Bandit is the robotic leader of the Three Outlaws.
• Rhino (voiced by Peter Newman) is a rhinoceros-like mutant.
• Cyclops is a one-eyed balloon-bodied creature that is very weak. Whenever he was shot, he would lose air and fly around like a punctured balloon.

Other villains

• Bounty Hunter is a muscular monster with a face resembling a Bulldog with high, pointed ears. He has a sparkling laser on his head and a red star on his belt. He was imprisoned by Stargazer for 200 years but escaped twice (broken out once by Mon*Star in episode 22 and the second time on his own in episode 45). He can absorb energy directed at him and use it to sustain his physical form as well as grow larger and more powerful. He can only be defeated by the solar energy bazooka that Commander Stargazer has. He is extremely dangerous and powerful, as he has easily defeated all the original SilverHawks twice. He was stopped by Commander Stargazer and by the later SilverHawk Hotwing.
• Uncle Rattler (voiced by Peter Newman) is Yes-Man's uncle who is from the same species as him. He only appears in his self-titled episode.

Stars

• Moon*Star of Limbo - A solid star, it gives Mon*star his powers to transform.

Planets

• Bedlama - A planet similar to Earth, though stars can be seen in its sky even during daytime. Hawk Haven is its satellite.
• Hawk Haven - The Silverhawks' base of operations. It orbits Bedlama.
• Brim*Star - A planet where Mon*Star's mob operates. It is hollow with Mon*Star's quarters inside it and accessible from the outside via a large star-shaped opening on its crust. The surface of Brimstar is like a giant ship junkyard.
• Automata - A factory-sized half-planet, controlled by a supercomputer named Monotone, which is the only sentient being on the planet.
• Dolar - A hollow gem-looking bank planet.
• Fence - A small planetoid with a bar, frequented by criminals.
• Hanging Rock - The Bounty Hunter's planet. It is full of mountains and it has dangerous electro-rocks that absorb energy and feed it to the Bounty Hunter.

Other

• Starship Casino - Poker-Face's space station where gambling takes place. It is stationed outside of the SilverHawks' jurisdiction, beyond "the Lightyear Limit".
• The Artificial Sun is an antenna-looking device that performs all the functions of a sun and needs to be fueled frequently. It is run by Professor Power and has been the target of the Mob many times.
• Penal Planet 10 - a place where most criminals are kept. The Bounty Hunter and Smiley are there most of the time, but Hardware and Mon*star have been imprisoned there.

Weapon-birds

The weapon-birds are cyborg animal companions released with most of the action figures. While Tally-Hawk appeared in almost all of the episodes in the series, all other "weapon-birds" only appeared in a handful of episodes. In the episode "The Fighting Hawks", the weapon-birds for the Steel Twins were accidentally switched from the toy versions. The weapon-birds are listed below, with their toy partner's name in parentheses.

• Tally-Hawk (Quicksilver)
• Side Man (Bluegrass)
• Rayzor (Steelheart)
• Stronghold (Steelwill)
• May-Day (Copper Kidd)
• Sly-Bird (Stargazer)
• Gyro (Hotwing)
• Backlash (Flashback)
• Tail-Spin (Moon Stryker)
• Jet Stream (Condor)
• Sky Shadow (Mon*Star) - a bat, rather than a bird
• Prowler (Hardware) - a green flying dragon
• Volt-Ure (Mo-Lec-U-Lar)
• Shredator (Buzz-Saw)
• Airshock (Mumbo-Jumbo)

In 2021, a new line of Silverhawks action figures were announced.^[10]