The following is a list of characters that appear in the Young Justice TV series and its comic book tie-ins.

Note for reading: The designations for the characters are used when Zeta Beams transport them from one place to another, and are normally spoken in episode by an automated voice (Stephanie Lemelin). Numbers without a letter represent members of the Justice League; A rank represents individuals authorized to use Zeta Beams; B rank represents members of the Team; C rank represents the Team's pets; D rank represents members of the Outsiders; E rank represents the reserve members of the Justice League; G rank represents the members of Nightwing's splinter team; Z rank represents members of Batman, Incorporated; and L represents Light members.

Overview CharacterVoice ActorSeasonsComic Books Video game Audio Play 1 Invasion Outsiders Phantoms 2011 comic series Outsiders Targets Legacy The Prize The Team Dick Grayson / Robin / Nightwing Jesse McCartney colspan="5" colspan="2" Kaldur'ahm / Aqualad / Aquaman / Doctor Fate Khary Payton colspan="5" colspan="2" Wally West / Kid Flash / Doctor Fate Jason Spisak colspan="2" Kon-El / Conner Kent / Superboy Nolan North colspan="9" M'gann M'orzz / Megan Morse / Miss Martian Danica McKellar colspan="9" Artemis Crock / Artemis / Tigress Stephanie Lemelin colspan="5" colspan="3" Zatanna Zatara / Zatanna / Doctor Fate Lacey Chabert colspan="2" Roy Harper / Will Harper / Speedy / Red Arrow Crispin Freeman colspan="3" colspan="2" Raquel Ervin / Rocket Kali Troy (S1)Denise Boutte (S2–present) colspan="3" colspan="2" La'gaan / Lagoon Boy / Aquaman Yuri Lowenthal colspan="2" colspan="2" Barbara Gordon / Batgirl / Oracle Alyson Stoner colspan="4" Karen Beecher / Bumblebee Masasa Moyo colspan="2" colspan="2" Mal Duncan / Guardian Kevin Michael Richardson colspan="2" colspan="2" Cissie King-Jones / Arrowette Kelly Stables colspan="2" colspan="2" colspan="2" Roy Harper / Speedy / Arsenal Crispin Freeman colspan="2" Stephanie Brown / Spoiler Mae Whitman colspan="2" colspan="2" colspan="2" Gabrielle Daou / Violet Harper / Halo Zehra Fazal colspan="2" colspan="2" colspan="2" Traci Thurston / Thirteen / Doctor Fate Lauren Tom colspan="2" colspan="2" colspan="2" colspan="2" Cassandra Wu-San / Orphan N/A colspan="2" colspan="2" colspan="2" Andie Murphy / Mist Daniela Bobadilla colspan="2" colspan="2" colspan="2" colspan="2" Khalid Nassour / Doctor Fate Usman Ally colspan="3" colspan="5" Outsiders Garfield Logan / Beast Boy Logan Grove (S1–S2)Greg Cipes (S3–present) colspan="2" colspan="2" Tim Drake / Robin Cameron Bowen colspan="4" colspan="2" Jaime Reyes / Blue Beetle Eric Lopez colspan="3" colspan="2" Cassie Sandsmark / Wonder Girl Mae Whitman colspan="4" colspan="2" Virgil Hawkins / Static Bryton James colspan="3" colspan="2" colspan="2" Eduardo Dorado Jr. / El Dorado Freddy Rodriguez colspan="3" colspan="2" colspan="2" Bart Allen / Impulse / Kid Flash Jason Marsden colspan="4" colspan="2" Brion Markov / Geo-Force Troy Baker colspan="2" colspan="2" colspan="2" Tara Markov / Terra Tara Strong colspan="2" colspan="2" colspan="2" Fred Bugg / Forager Jason Spisak colspan="2" colspan="2" Victor Stone / Cyborg Zeno Robinson colspan="2" colspan="2" colspan="2" Courtney Whitmore / Stargirl Whitney Moore colspan="2" colspan="2" colspan="2" colspan="2" Leslie Willis / Livewire Britt Baron colspan="2" colspan="2" colspan="2" colspan="2" Wendy Jones / Windfall Zehra Fazal colspan="2" colspan="2" colspan="2" colspan="2" Lia Briggs / Looker Grey Griffin colspan="2" colspan="2" colspan="2" Justice League Kal-El / Clark Kent / Superman Nolan North colspan="3" colspan="2" Bruce Wayne / Batman Bruce Greenwood colspan="3" Oliver Queen / Green Arrow Alan Tudyk colspan="2" colspan="2" Orin / Aquaman I Phil LaMarr colspan="2" colspan="2" Barry Allen / Flash George Eads (S1-S2)James Arnold Taylor (S2–present) colspan="3" colspan="2" J'onn J'onzz / John Jones / Martian Manhunter Kevin Michael Richardson colspan="5" colspan="4" John Smith / Red Tornado Jeff Bennett colspan="3" Giovanni Zatara / Zatara / Doctor Fate Nolan North colspan="2" Billy Batson / Captain Marvel / Shazam Rob Lowe / Chad Lowe (as Shazam)Robert Ochoa / Eric Lopez (as Billy Batson) colspan="3" colspan="2" Nathaniel Adams / Captain Atom Michael T. Weiss colspan="2" colspan="2" Princess Diana / Wonder Woman Maggie Q colspan="3" colspan="2" Katar Hol / Hawkman James Arnold Taylor colspan="2" colspan="2" Shayera Hol / Hawkwoman Danica McKellar (second season) Zehra Fazal (third season) colspan="2" colspan="2" colspan="2" Hal Jordan / Green Lantern Dee Bradley Baker colspan="2" colspan="2" John Stewart / Green Lantern Kevin Michael Richardson colspan="3" colspan="2" Dinah Laurel Lance / Black Canary Vanessa Marshall colspan="5" colspan="2" Nabu / Doctor Fate Kevin Michael Richardson colspan="4" colspan="2" colspan="2" Arnus / Icon Tony Todd colspan="3" colspan="3" colspan="2" Guy Gardner / Green Lantern Troy Baker colspan="2" colspan="3" colspan="2" Patrick O'Brian / Plastic Man N/A colspan="2" colspan="2" colspan="2" colspan="2" Ray Palmer / Atom Jason Marsden colspan="2" colspan="2" Jefferson Pierce / Black Lightning Khary Payton colspan="2" colspan="2" John Henry Irons / Steel Zeno Robinson colspan="2" colspan="2" colspan="5" Tatsu Yamashiro / Katana N/A colspan="2" colspan="6" Curtis Metcalf / Hardware N/A colspan="2" colspan="6" Tora Olafsdotter / Ice N/A colspan="2" colspan="5" Rex Mason / Metamorpho Fred Tatasciore colspan="2" colspan="6" Ralph Dibny / Elongated Man David Kaye colspan="2" colspan="3" colspan="2" The Light Vandar Adg / Varl'Jat / Marduk / Genghis Khan / Vandal Savage / L-1 Miguel Ferrer (S1-S2)David Kaye (S3-) colspan="4" colspan="5" Ra's al Ghul / L-2 Oded Fehr colspan="2" colspan="2" colspan="4" Lex Luthor / L-3 Mark Rolston colspan="5" Queen Bee / L-4 Marina Sirtis colspan="3" colspan="2" colspan="2" Orm Marius / Ocean Master / L-5 Roger Craig Smith colspan="2" colspan="4" Brain / L-6 Corey Burton colspan="2" colspan="2" colspan="4" Klarion the Witch Boy / L-7 Thom Adcox-Hernandez colspan="4" colspan="3" Black Manta / L-8 Khary Payton colspan="4" colspan="2" Ultra-Humanite / L-10 Greg Weisman colspan="2" colspan="4" Slade Wilson / Deathstroke / L-9 Wentworth Miller (1st)Fred Tatasciore (2nd) colspan="2" colspan="5" Zviad Baazovi / L-12 Yuri Lowenthal colspan="2" colspan="2" colspan="2" League of Shadows Lawrence "Crusher" Crock / Sportsmaster Nick Chinlund colspan="2" Sensei Keone Young colspan="2" colspan="4" Jade Nguyen / Cheshire Kelly Hu colspan="4" colspan="3" Eric Needham / Black Spider Josh Keaton colspan="2" colspan="4" Hook N/A colspan="3" colspan="4" Professor Ojo Nolan North colspan="8" Ubu Fred Tatasciore colspan="4" Talia al Ghul Zehra Fazal colspan="2" colspan="2" colspan="4" Cassandra Savage Zehra Fazal colspan="2" colspan="2" colspan="5" Richard Swift / Shade Joel Swetow colspan="2" colspan="5" Sandra Wu-San / Lady Shiva Gwendoline Yeo colspan="2" colspan="2" colspan="5" Onyx Adams Logan Browning colspan="3" colspan="5" Rictus Gwendoline Yeo colspan="3" colspan="5" New Gods of Apokolips DeSaad Dee Bradley Baker colspan="2" colspan="2" colspan="5" Darkseid Michael-Leon Wooley colspan="2" colspan="5" Kalibak Dee Bradley Baker colspan="2" colspan="5" Gretchen Goode / Granny Goodness / L-11 Deborah Strang colspan="2" colspan="2" colspan="5" Big Barda Grey Griffin colspan="2" colspan="5" Grayven Dee Bradley Baker colspan="2" colspan="5" Mary Bromfield / Sergeant Marvel / Dark Mary Erika Ishii colspan="3" colspan="2" colspan="2" Onslaught Cameron Mahkent / Icicle Jr. Yuri Lowenthal colspan="3" colspan="2" Baran Flinders / Mammoth N/A colspan="3" colspan="2" Selinda Flinders / Shimmer N/A colspan="3" colspan="2" Simon Jones / Psimon Alan Tudyk colspan="3" colspan="4" Tommy Terror Yuri Lowenthal colspan="2" colspan="2" colspan="5" Tuppence Terror Danica McKellar colspan="2" colspan="2" colspan="4" Devastation Diane Delano colspan="2" colspan="2" Leonard Smalls / Holocaust Zeno Robinson colspan="2" colspan="6" Match Nolan North colspan="2" colspan="2" colspan="2" Juan Cordero / Metallo N/A colspan="6" colspan="2" Recurring Villains Victor Fries / Mr. Freeze Keith Szarabajka colspan="3" colspan="5" Crystal Frost / Killer Frost Sarah Shahi colspan="4" Leonard Snart / Captain Cold Alan Tudyk colspan="7" Mark Desmond / Blockbuster René Auberjonois colspan="3" colspan="2" Thomas O. Morrow / T.O. Morrow Jeff Bennett colspan="3" colspan="4" Bromwell Stikk / Mister Twister John de Lancie colspan="8" Daniel Brickwell / Brick Khary Payton colspan="5" Bane Danny Trejo colspan="4" Jeffrey Burr / Kobra Arnold Vosloo colspan="2" colspan="4" Anthony Ivo / Professor Ivo Peter MacNicol colspan="4" Amazo Peter MacNicol colspan="2" colspan="2" colspan="4" Abra Kadabra Jeff Bennett colspan="6" Matt Hagen / Harlan Matthews / Clayface Nolan North colspan="4" Werner Vertigo / Count Vertigo Steve Blum colspan="2" colspan="2" The Joker Brent Spiner colspan="2" colspan="4" Helga Jace Grey Griffin colspan="2" colspan="5"

Main characters "The Team"

Member20102011201220132014201520162017201820192020 Robin / NightwingAqualadKid FlashSuperboyMiss Martian Artemis / TigressZatannaSpeedy / Red ArrowRocket TempestAquagirl TroiaRobin Lieutenant MarvelSergeant MarvelBatgirl / OracleBumblebeeLagoon Boy Beast Boy Robin Wonder GirlBlue BeetleImpulse / Kid FlashGuardianSpeedy / Arsenal Static ArrowetteSpoilerThirteenGeo-ForceHalo ForagerTerraOrphanMist

Founding members The initial six main characters were chosen by the producers, from a list of potential candidates of 50 to 60 DC Comics teenage superheroes. The criteria consisted of age, powers, personality, cultural icon status, and dynamics. An additional regular, Zatanna, was introduced partway through the first season, and Rocket was added at the end of the first season.

Nightwing / Robin / Dick Grayson (voiced by Jesse McCartney) - Designation: B01. Known as Robin throughout first season; Grayson was, though only 13, the most experienced member of the team. He does not possess any superpowers; however, he is an excellent hand-to-hand combatant, tactician, and a technological genius. He repeatedly plays with the English language, particularly with words which cease to function without prefixes, such as "disaster" ("aster"), "overwhelmed" ("whelmed"), and "distraught" ("traught"). Batman had forbidden Robin from revealing his secret identity to the team, though Kid Flash was aware of it. Later in the series, Dick assumes the identity of Nightwing and becomes the leader of the team. Aquaman / Aqualad / Kaldur'ahm (voiced by Khary Payton) - Designation: B02; later 27. In the first season, Kaldur'ahm (or "Kaldur" for short) was the 16-year-old leader of the team. His powers, channeled through the tattoos on his arms, are a mixture of Atlantean sorcery and science. He displays super strength, durability, as well as the ability to breathe and speak underwater, typical of Atlanteans. He also possesses the ability to form hard water constructs through the use of his Atlantean water bearers and to generate electricity. He was selected as the initial leader for the Team, but stated that he did not want to remain leader and wished to turn over leadership to Robin when he was ready, saying that it was his destiny to lead this team. By the third season, Kaldur has assumed the Aquaman mantle and is co-leader of the Justice League along with Wonder Woman.