Chemistry

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  Abigail O'Shay (Prime Earth)
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  Achilles Milo (New Earth)
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  Albert Desmond (New Earth)
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  Alec Holland (New Earth)
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  Alec Holland (Prime Earth)
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  Alec Holland (Swamp Thing 1990 TV Series)
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  Alexander Luthor (Prime Earth)
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  Alexei Luthor (Earth-Two)
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  Andrea Thomas (Shazam!/Isis Hour)
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  Angela Wainwright (New Earth)
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  Archer (New Earth)
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  Arnold Porter (Dakotaverse)

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  Bane (Arkhamverse)
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  Bartholomew Allen (Arrow)
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  Bartholomew Allen (Arrow: Earth-2)
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  Bartholomew Allen (Out of Time)
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  Bartholomew Allen (Prime Earth)
• Category:Biochemistry
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  Brian O'Brien (Quality Universe)
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  Bryce Wayne (Earth -11)

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  Cecil Adams (Arrow)
• Christopher Weiss (New Earth)
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  Copper (New Earth)
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  Crown Prince (Swamp Thing 1990 TV Series)

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  Damian Wayne (Batman in Bethlehem)
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  Dane Maxwell (Prime Earth)
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  Daniel Dunbar (New Earth)
• Darrel Dane (Earth-Two)
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  Darrel Dane (Quality Universe)
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  Daryl Gutierrez (Prime Earth)
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  David (The Batman)
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  Dexter Knox (Earth-S)
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  Doctor Poison II (New Earth)
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  Doctor Psycho (Gods and Monsters)

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  Elizabeth Swift (Prime Earth)

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  Fang Gow (Earth-Two)
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  Flash (Barry Allen)
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  Flashback (Earth-One)
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  Francine Langstrom (Arkhamverse)
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  Francisco Ramon (Arrow)

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  Gary Concord, Sr. (Earth-Two)
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  Gerald Crane (Gotham)
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  Gold (Justice)
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  Gold (New Earth)
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  Gold Girl (New Earth)

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  Hagen (New Earth)
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  Hans Kronitz (Quality Universe)
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  Hans Rischar (Prime Earth)
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  Harleen Quinzel (White Knight)
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  Hawley Griffin (Earth-ABC)
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  Hugo Strange (Earth-Two)
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  Hugo Strange (New Earth)

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  Inheritor (Earth-One)
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  Iron (Justice)
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  Iron (New Earth)
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  Iron Girl (New Earth)
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  Isabel Maru (DC Extended Universe)

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  Jack Napier (Burtonverse)
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  James Barr (Earth-S)
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  Jarrod Jupiter (New Earth)
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  Jason Garrick (Flashpoint Timeline)
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  Jason Garrick (New Earth)
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  Jeremy Stone (Wildstorm Universe)
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  Joker (Batman in Bethlehem)
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  Joker (DC Bombshells)
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  Joker (DCAU)
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  Joker (Earth-One)
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  Joker (Injustice: Gods Among Us)
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  Joker (The Batman)
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  Jonathan Crane (Arkhamverse)
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  Jonathan Crane (DC Legends)
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  Jonathan Crane (Earth-One)
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  Jonathan Crane (Gotham)
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  Jonathan Crane (Injustice: The Regime)
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  Jonathan Crane (Justice)
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  Jonathan Crane (Lil Gotham)
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  Jonathan Crane (New Earth)
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  Jonathan Crane (Nolanverse)
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  Jonathan Crane (Prime Earth)
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  Jonathan Crane (Scooby-Doo Team-Up)
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  Jonathan Crane (Super Friends)
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  Jonathan Crane (The Brave and the Bold)
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  Justin Claybourne (Arrow)

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  Karl Helfern (Prime Earth)
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  Karl Hellfern (New Earth)
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  Key (New Earth)
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  Key (Prime Earth)
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  Kirk Langstrom (Arkhamverse)
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  Kirk Langstrom (Prime Earth)
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  Kirk Langstrom (The Batman)
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  Kirk Langstrom (The New Order)
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  Kuo Tseh-Shi (Astro City)

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  Laevar Bolto (Pre-Zero Hour)
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  Lafayette Du Soir (Earth-ABC)
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  Lazlo Valentin (Batman in Bethlehem)
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  Lazlo Valentin (New Earth)
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  Lazlo Valentin (Prime Earth)
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  Lead (Justice)
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  Lead (New Earth)
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  Lead Girl (New Earth)
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  Lord of Life (Earth-Two)
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  Lyle Norg (Earth-Prime)
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  Lyle Norg (Post-Zero Hour)
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  Lyle Norg (Pre-Zero Hour)

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  Malagigi (New Earth)
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  Mantis Morlo (Pre-Zero Hour)
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  Mark Desmond (New Earth)
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  Mark Desmond (Prime Earth)
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  Martin Stein (New Earth)
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  Martin Stein (Prime Earth)
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  Mary Wills (Earth-Two)
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  Mercury (New Earth)
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  Mercury Girl (New Earth)
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  Michael Holt (New Earth)
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  Michael Holt (Prime Earth)
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  Mist (New Earth)
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  Mister Revenge (Quality Universe)
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  Mister Who (New Earth)
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  Morris Eagleton (New Earth)
• Morton Murch (Earth-S)

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  Nameless (New Earth)
• Nelson Drew (Earth-ABC)
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  Niles Caulder (New Earth)
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  Norman Rotrig (New Earth)

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  Osmium (New Earth)
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  Otis Flannegan (New Earth)

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  Pamela Isley (Arkhamverse)
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  Pamela Isley (DC Legends)
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  Pamela Isley (DCAU)
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  Paranoid Pill
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  Paul Dekker (Prime Earth)
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  Philip Master (Earth-One)
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  Platinum (Justice)
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  Platinum (Lego Batman)
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  Platinum (New Earth)
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  Platinum Man (New Earth)
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  Plutonium Man (New Earth)
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  Princess Maru (New Earth)
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  Professor Bibbowski (New Earth)

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  Rake (Prime Earth)
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  Ralph Dibny (New Earth)
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  Raymond Kessler (New Earth)
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  Rex Tyler (New Earth)
• Rex Tyler (Prime Earth)
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  Robert Benton (Earth-ABC)
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  Robert Langstrom (New Earth)
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  Roy Lincoln (Earth-Two)
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  Roy Lincoln (New Earth)
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  Roy Lincoln (Quality Universe)
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  Ruth Monroe (Earth-One)
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  Ryan Choi (Prime Earth)

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  Stanislaus (Quality Universe)
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  Swamp Thing (New Earth)
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  Swamp Thing (Prime Earth)
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  Sydney Allard (New Earth)

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  Teacher (Prime Earth)
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  Terrence Sloane (New Earth)
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  Thaddeus Sivana (Earth-S)
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  Thomas N. Thomas (New Earth)
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  Thomas Wayne (Earth-153)
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  Tin (Justice)
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  Tin (New Earth)
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  Tomas Strong (Earth-ABC)

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  Victor Fries (Arkhamverse)
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  Viper (Earth-One)
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  Vulcanar (Quality Universe)

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  Warhog (Prime Earth)
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  Wesley Dodds (New Earth)
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  William Magnus (New Earth)
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  William Magnus (robot) (New Earth)
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  Winslow Schott (Lois & Clark)

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  Zara (Earth-Two)
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  Zirconium (New Earth)
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  Zoey Clark (Arrow)