Youth from the planet Krypton who was on his way to becoming a serious criminal but eventually reformed. He is also one of Krypton's only survivors of its destruction. He is a member of the Interstellar Counter Intelligence Corps and ally of the Legion of Superheroes.
- Continuity Snarl: He was originally one of the many Kryptonians of the Silver Age and was Put on a Bus by having him stay in the Legion's future. This made him available to be brought back during the 1980's Legion series. Okay so far, until Superman's history was changed in 1986 to make Superman the sole surviving Kryptonian. This caused problems. He was variously retconned into a Titanian whose powers turned him into a Kryptonian (which was mentioned only in supplementary material), a good Daxamite, and an evil Daxamite.
- HeelFace Turn: The original Dev-Em was a Kryptonian juvenile delinquent that attacked Superboy; after being thwarted by Superboy, Dev-Em traveled to the 30th century where he became an occasional ally of the Legion.
- Superpower Lottery: In both his Daxamite and Kryptonian iterations, Dev-Em is possessed of the same superhuman abilities (and weakness) of both races while beneath the empowering light of a yellow sun such as that of Earth's solar system.
A former ally of the Legion of Super-Heroes in the future, but currently resides in the present day.
- Anti-Hero: She has a quick temper and a bad attitude which causes strain in her relationships. As a member of the Workforce, she shown killing opponents by immolating them, much to the chagrin of Legion members.
- Broken Bird
- Canon Immigrant: Sort of. First appeared in the reboot era, and came to the present as part of a story where several Legionnaires were stuck in the present day. When they returned to the future, she stayed in the present. Since she was not Put on a Bus with the rest of the reboot, she could in theory show up at any time. A green-skinned version also appeared in the Threeboot.
- Flying Firepower: By expelling her fire she can propel herself forward with great accuracy and speed.
- Green-Skinned Space Babe: In the Threeboot where she comes from Mercury and has light-green skin.
- I Choose to Stay: In the past she befriend a group of homeless girls and confront a monster that was haunting her and the mall. Conquering her fear of the dark and saving the lives of the girls, Inferno decided to stay in the past as she felt no allegiance to the Legion or their future.
- Playing with Fire: Inferno has expert control over fire. She can generate this fire from within herself, often fueled by anger, and any ambient fire around her. She has such fine control over fire that she can burn shards of glass into chunks or cause massive explosions. She can also inflame her body or boils liquids.
- Primal Fear: She has a fear of darkness. Shadows, low light and the night sky all give her an intense fight or flight reaction. Covering her eyes or shrouding her in darkness will cause her to panic.
- The Exile: Exiled from their planet by Prime Minister Vorr, who was worried they'd prove a threat to his dictatorship. As it turned out, rightly so, though not in the way he expected.
- Human Aliens: Basically indistinguishable from humans.
- I Love Nuclear Power: They all got their powers due to nuclear fallout.
- Let's You and Him Fight: After being exiled, Marden King, brother of the deceased villain Monster Master, allowed them asylum on earth...but told them the wicked tyrants in the Legion Of Superheroes might see them as rivals and force them to leave. Things eventually got sorted out.
- Mass Super-Empowering Event: The quintet all gained their powers due to the same event.
- Two Girls to a Team: Life Lass and Gas Girl are the only girls on the otherwise all male team.
- Gone Horribly Wrong: The aforementioned Vorr had planned to use secret nuclear armaments to cement his control over Lallor. When one of his scientists bungled and the lab blew up, not only were his plans revealed, but the fallout ended up creating five threats to his rule...and the heinous act of banishing the five innocent youths from their home planet led the people to finally rise up and strike him down.
- All of the Other Reindeer: Unlike his teammates, people were terrified and disgusted by his powers, leading him to leave Lallor for Vorn, the planet of beasts.
- Animorphism: His power is to change his form to that of animals.
- Attack of the Killer Whatever: Vorn was a dangerous place before Beast Boy started whipping the local wildlife into a frenzy.
- The Exile: Self-imposed this time.
- FaceHeel Turn: Embittered by society's rejection, he became a misanthrope who was willing to kill to be alone.
- The Hermit: Tried to drive the last settlement of humans off of Vorn in order to be alone with its native life.
- Heroic Sacrifice: Threw himself into the jaws of a much more powerful beast to save the life of a little girl who'd fed him and been kind to him in dog form.
- Killed Off for Real: He's a comic book character whose friends regularly interact with a group that has figured out how to revive their own deceased members but he's not coming back.
- Speaks Fluent Animal: If he's in the form of that animal. Not only that, but they instinctively accept him as their leader.
- Always Save the Girl: He surrendered to the "evil tyrants" of the Legion of Super-heroes when he realized that collateral damage from fighting them could injure Violet.
- Beauty Equals Goodness: When Marden King temporarily convinced the Lallorians that the LSH was evil, he had difficulty believing that a pretty girl like Shrinking Violet could be a villain.
- Crazy Jealous Guy: Deeply possessive of Shrinking Violet when he dated her, often checking up on her with telescopic vision, or threatening harm upon guys she hung out with. When he thought she was sleeping with Colossal Boy, he legitimately tried to kill him, and their fight destroyed a mountain range.
- Fatal Flaw: His impulsiveness and Hair-Trigger Temper—and he's the leader, folks!
- Jerk with a Heart of Gold: He can be childish and a bit of a Dumb Jock, but he does want to help people.
- My God, What Have I Done?: One a couple of occasions he's felt so guilty that he actually temporarily lost his powers.
- My Greatest Failure: He thought Violet was cheating on him, but realized it was someone disguised as her. He decided Violet must have gone undercover on a mission without telling him and in a fit of pique decided not to investigate any further or reveal the deception. The real Violet, meanwhile had been kidnapped and tortured for months by Imskian rebels. DB spent long while justifiably beating himself up over this one.
- Oblivious to Love: Life Lass and Gas Girl have crushes on him, but he doesn't notice.
- Power Copying: He can copy any power he has properly encountered, and can use more than one at the same time.
- Power-Strain Blackout: This occasionally happened when he tried to imitate something incredibly powerful (like Validus), or tried to use magic.
- Superpower Lottery: His "single" power works out more like all the powers ever since he's met a lot of superheroes and villains, and he can combine them if he wishes.
- Animorphism: He can de-evolve into an ape.
- Awesomeness by Analysis: In his hyper-evolved form.
- Beleaguered Assistant: Gets pretty frustrated trying to check Duplicate Boy's impetuous nature.
- Hollywood Evolution: The fact that he's not technically human to start with is just one of the problems.
- My Brain Is Big: His "intelligent" form includes an expanded cranium.
- The Strategist: In his evolved form.
- Super Intelligence: In his evolved form.
- Super Strength: As a "cave-man".
- Elemental Shapeshifter: Can become any gaseous element she wishes.
- Super Smoke: Her power in a nutshell.
- Unfortunate Names: Her hero name makes it sound like she has trouble with, or powers connected to, flatulence.
- Gaslighting: They used all their powers together to create an illusory hellscape which allowed them to easily beat the mentally-unstable League of Super-Assassins.
- Mundane Utility: After bombing as superheroes, Color Kid and Fire Lad went into business as very successful glassblowers.
- Superzeroes: The group consists of this, all of them being rejects from the Legion of Super-Heroes. The Subs have varied in terms of effectiveness across continuities, and most of them were rejected on the grounds that they needed more training in order to control their abilities more than because their abilities themselves were useless.
- Took a Level in Badass: Depicting as well-meaning but not-entirely-effective for much of their career, the original Substitute Heroes ultimately wound up joining the Legion proper in its darkest hour, when it was being hounded out of existence by a corrupt Earthgov. When the Legion itself falls apart, they refuse to be hounded into quiescence. While Polar Boy is ultimately arrested for trying to incite a riot, the other founding members go underground, train themselves up, and form the core of the resistance movement.
- True Companions: Perhaps moreso than the "real" Legion, the Subs see each other as family first.
- Unskilled, but Strong: One of the primary reasons why many of them can't join the real Legion.
- What Kind of Lame Power Is Heart, Anyway?: The other primary reason many of them never make it to the real Legion.
- Power Incontinence: His power could actually be really useful if he could even slightly control what transmissions he picks up, getting access to transmissions that haven't actually occurred yet for instance would be nice if done intentionally, but transmissions from a hundred years ago in a different universe are going to be pretty useless almost all of the time as are most transmissions in general.
- What Kind of Lame Power Is Heart, Anyway?: He can hear radio transmissions... all of them. Not necessarily from this universe or time period, mind you, but he can hear them.
Chlorophyll Kid/"Plant Lad"
- Green Thumb: Essentially taken to its logical conclusion - he can accelerate the growth of plants, and that's his only power. The inability to actually control plants is the largest reason for him never being accepted
- Heart Is an Awesome Power: He slowly learns to control the direction and to an extent shape of plants he's speeding the growth of making his power much more useful in a fight, and depending on just where a plant starts growing from, like say on or in an opponent, it always was. The subs first real fight as a group was against Plant Men, which worked out really well for Ral.
- Heroic Build: Originally played straight when he was first introduced in the Silver Age, up until the 1980s when the Subs were rewrote as a group of incompetent fanboys, and he was made rather obese. Following the return of the "original" Legion, he was slimmed back down.
- What Kind of Lame Power Is Heart, Anyway?: He started out with the ability to speed up the growth of plant life, and that was it. This caused him to be turned away when he applied to the Legion since while his power did have very useful applications those applications were not so useful in a fight.
Color Kid (Color King)
- Ambiguously Gay: In some continuities, most notably the cartoon.
- Heart Is an Awesome Power: When it can turn Green Kryptonite into harmless Blue Kryptonite, when you can use it to turn the air black (remember, Night Girl is his teammate), and when you need an effective disguise or you want to disorient your foes. His power has greater applications that it at first appears since he's actually changing the color of the object and with some things this wreaks much larger molecular changes, like with Kryptonite.
- Horned Hairdo: His hair is constantly horned.
- Master of Disguise: Want to look like a different race or species, or blend in with an Amazing Technicolor Population? Here's your man!
- Master of Illusion: His power can create simple illusions by, say, changing the color of the air.
- Monochromatic Eyes: His eyes are solid black.
- Rainbow Lite: His costume always includes a color spectrum representation somewhere in the vicinity of his upper torso, and this "rainbow" never contains more than five colors. Usually red, orange, yellow, green and blue.
- Shoulders of Doom: His costume's upright external shoulder pads/pauldrons give him a distinct silhouette, even if they're a bit smaller than most examples.
- What Kind of Lame Power Is Heart, Anyway?: The page picture, even!
- Killed Offscreen: By Earth-Man, prior to the "Superman and the Legion of Super-Heroes" storyline.
- Me's a Crowd: Kinda. Eventually, they'll split into two whole people.
- Multiple Head Case: Their two heads are the trope image.
- Sibling Yin-Yang: Sort of. The heads are technically brothers, and they hate each other.
- What Kind of Lame Power Is Heart, Anyway?: Even among the Substitute Heroes, having two heads that never cooperate is an incredibly pathetic "power".
- Breath Weapon: He can breath fire, and on Schwar with it's low oxygen levels had fair control. In earth's oxygen rich atmosphere he creates a lot more fire than he wants and does not have the control he needs to keep from being a danger to his allies.
- Flaming Hair: It seems to be a permanent illusion of some sort.
- Magic Meteor: Stag gained his fire breathing abilities after exposure to a strange meteorite.
- Monochromatic Eyes: Develops these in the Bronze Age for some reason.
- Pointy Ears: Has these in 5YL for some reason.
- Power Incontinence: A fire-breather with allergies. During 5YL, he got training that allowed him much better control, at the cosssst of hisssssing hisss ssibilantsss.
- Unskilled, but Strong: The reason his membership has been repeatedly denied. His fire breath is incredibly potent, but he lacks the ability to control it in any meaningful way. The original incarnation even had terrible allergies that would often activate his powers. Preboot, he would eventually achieve a level of control that was frankly ridiculous, capable of making ice sculptures with his fire breath, but this would be ignored in Retroboot.
- Verbal Tic: During 5YL.
- You Don't Look Like You: His design receives a complete makeover in 5YL, giving him a more demonic appearance including reddish skin. No explanation is given.
- Ascended Fangirl: A fan of superheroes and the Legion who becomes a Legion affiliated hero in her own right.
- Gender Bender: One of her viruses can change a person's sex.
- Interspecies Romance: Starts dating Jacques Foccart (aka Invisible Kid II) in 5YL.
- Plague Master: A rare heroic example.
- Put on a Bus: In Retroboot, she was banished to Limbo by Earth-Man (where she joined up with Doctor Thirteen and a Nazi gorilla).
- Unskilled, but Strong: Like many of her teamates, her inability to control her powers is her downfall. In her second attempt to apply for Legion membership, she boasts that she's much more powerful than before and can even cause epidemics... but her control hasn't improved remotely.
- What Kind of Lame Power Is Heart, Anyway?: Initially, she could only give people aches and sniffles. Afterwards, she averted this by becoming much more powerful; it's just that she lacks meaningful control over her diseases.
- Heart Is an Awesome Power: In the last postboot story, Drura is introduced as a Legion cadet, airlifted in as part of emergency backup during a riot in Metropolis, and demonstrating much greater control of powers than the previous version, reduces two dedicated terrorists to vomiting bags of sick who eagerly give up the location of their ringleader.Infectious Lass: Hi, fellas. You're now officially walking hot zones....Arrow: I'm... I'm willing to die for my cause.Chameleon: Oh, you'll die. We'll all die someday. The issue is, do you want to die in your bed surrounded by loved ones... or bent over in this alley with a woefully inadequate supply of tissues?
- Rapunzel Hair: Her purple locks reach her ankles in length.
- Flechette Storm: He launches all of his quills every time, making him equally dangerous to friend and foe.
- Multiple-Choice Past: Depending on which version you read, he either got his powers from a curse or was born a mutant.
- Spike Shooter: Shoots quills from his body.
- Unskilled, but Strong: His quills are extremely harmful.. to friend and foe alike, since he can only shoot them all at once and in all directions surrounding him.
- Youthful Freckles: In his first appearance.
- Mood-Swinger: She doesn't have full control over her power to tap into the emotional spectrum, which leads to her going from raging mad to hopeful to cocky and willful in the space of a few panels.
- Rainbow Lite: Her costume includes a "rainbow" of only three colors (blue, green and red).
- Grievous Harm with a Body: Could be used as a club or dropped on/thrown at people in his immobile stone form.
- Heart Is an Awesome Power: He even won a contest held by the Legion proper with membership as the prize, which he rejected because he couldn't bear to abandon his friends.
- Sleepwalking: Later on in his preboot career, he trained himself to do this, enabling him to move will in stone form.
- The Stoic: Often characterized as being an extremely taciturn and serious individual
- Stone Wall: Essentially invulnerable in stone form, but incapable of movement.
- Taken for Granite: What his power amounts to, turning into an immobile statue. Eventually, Preboot Stone Boy learned how to turn just his fists to stone, but this is usually ignored by other incarnations.
Members who went on to join the Legion:
- Dream Girl
- Night Girl
- Polar Boy
- Star Boy
- Off-panel, the entirety of the original lineup wound up joining during the five-year gap period between volume 3 and volume 4, shortly before the team was disbanded.
- Insect Queen
- Kid Quantum I and II (joined the Legion)
- Monstress (joined the Legion)
- Phrenologax Lad
- 90% of Your Brain: His power.
- Star Boy (joined the Legion)
- AKA: UnknownHomeworld: Unknown
- Spike Shooter: His shooting "darts" which he can quickly regrow.
- Wolverine Claws: He has quickly regenerating "darts" that he can launch at people, and usually maintains a set between his knuckles.
- AKA: ElvarHomeworld: Unknown
- Cool Sword: His "Power Sword" is a blade with energy running through it that tends to look like it's coated in flame.
- Master Swordsman: In a time of casual intergalactic travel and all sorts of amazing futuristic weapons Evlar more than gets by using his energy sword.
- Pointy Ears: He has very oversized (by human comparison) pointed ears.
- AKA: Re-Animage (true name unknown)Homeworld: Unknown
- Healing Factor: He can quickly regenerate from very severe damage.
- Really 700 Years Old: His true age is unknown but he can no longer age as the same properties which give him his healing factor prevent his physical aging.
- AKA: Aviax (true name unknown)Homeworld: Unknown
- Extreme Omnisexual: He transformed in order to have sex with a dinosaur once. In Wanderers #12.
- Flight: He can fly in even in space due to his gravity nullifying enhanced bone structure.
- Shapeshifting: He can turn into any bird.
- AKA: UnknownHomeworld: Unknown
- Emotion Eater: Her powers developed to the point where she was feeding on the emotions anyone near her.
- Emotion Control: She can manipulate the emotions of those near her.
- The Empath: She can sense the emotional state of others.
- Human Aliens: She's from some far flung corner of the universe but looks human, even if her white hair would be a bit odd on a human of her apparent age.
- AKA: UnknownHomeworld: Unknown
- Artistic License Physics: "Quantum" may be the Latin word for amount but its modern use is for the smallest possible unit of a thing, so it's probably not worth bragging about using "quantum energy" in the way she does.
- Energy Beings: She can transform herself into pure living energy.
- Flying Firepower: She can fly and shoot "quantum energy".
- Human Aliens: She's from some far flung corner of the universe but looks like some blonde lady with a growing out dye job.
- Stripperiffic: She's essentially wearing some pink panties paired with random bits of matching tape.
- Inferno - see Legion Of Super Heroes Silver Age
- Jeyra Entinn
- Kid Quake
- Mekt Ranzz
- Micro Lass
- Nemesis Kid - see Legion Of Super Heroes Legion Of Super Villains
- "Plant Lad" - see Chlorophyll Kid above
- Polar Boy - see Legion Of Super Heroes Silver Age
- Vrax Gozzl
- White Witch - see Legion Of Super Heroes Silver Age
- Homeworld: Dendron
- Full-Frontal Assault: She's not actually wearing anything besides her hooded cape.
- Homeworld: Mica
- Dishing Out Dirt: Has the power to control and manipulate sand.
- AKA: Sev TcheruHomeworld: Unknown
- Creepy Long Fingers: His fingers are very long and thin, which is highlighted by his diminutive stature.
- Monochromatic Eyes: Black eyes, though they're sometimes drawn with white pupils like the similar looking, but much taller, aliens from Yquem last seen in Rex The Wonder Dog.
- My Brain Is Big: He's got a tall bald head.
- Homeworld: Earth
- Fish out of Temporal Water: After traveling to the 30th Century to help defeat Chronos she elected to remain there despite being from the 20th.
- Henshin Hero: She only has superpowers when transformed into her superhero form(s).
- I Just Want to Be Special: She really really wants to be a superhero.
- Legacy Character: She gets a hold of the Hero Dial from Dial H for Hero for a while.
- Word of God eventually supported Epileptic Trees from the time that she was meant to be the Postboot Glorith. (At one point the Time Trapper calls her "glorious"; glorious + Lori = Glorith.)
- Plot-Relevant Age-Up: The team only allows for adults so the fact that she ages up to adulthood when powered up is important to her remaining on WorkForce.
- Tagalong Kid: She really wants to be a hero and becomes part of WorkForce despite actually being a child.
- Homeworld: Earth
- Breast Plate: Her armor has two ludicrous lumps stuck to it over her breasts, just in case you were going to forget that she's a woman.
- The Corruption: Was enthralled by the Blight and taken over by their putrefaction. Her final fate is unknown.
- Powered Armor: She wears fancy red and gold powered armor.
- Token Minority: She appears to be the only member of WorkForce with any African heritage.
- AKA: Roy TravichHomeworld: Earth
- Battle Couple: The relationship didn't last but he fought alongside Spider Girl when they were dating.
- The Corruption: Was enthralled by the Blight and taken over by their putrefaction. His final fate is unknown.
- Homeworld: Braal
- Fictional Sport: A retired Magnoball champion, the same sport Cosmic Boy's little brother plays professionally in realities where he didn't follow Cos into superheroics.
- Magnetism Manipulation: He can magnetically control things near him.
Members who joined or were originally part of the Legion:
- AKA: Jahr-Drake Ningle
- Energy Beings: After being "killed" by Mordru it was revealed he had become this universe's version of Wildfire, as an energy being needing a containment suit.