| 0 | Who's Who | cover | 2 | pencils: George Pérez; inks: Dick Giordano | Gim Allon, Laevar Bolto, Arthur Brown, Chronos, Cinnamon, Circe First, Claw, Clayface, Clayface, Clayface, David Clinton, Clock King, Cluemaster, Colonel Computron First |
| 1 | Who's Who's Hows and Whys | letters page | 1 | script: Len Wein | |
| 2 | Chronos | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Gil Kane; inks: Gil Kane; colors: Len Wein, Tom Ziuko | The Atom, Chronos, David Clinton, Ray Palmer |
| 3 | Cinnamon | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Brent Anderson; inks: Brent Anderson; colors: Len Wein, Tom Ziuko | Cinnamon, Kate Manser |
| 4 | Circe | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Don Heck; inks: Don Heck; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Circe First, Princess Diana, Wonder Woman |
| 5 | The Citadel | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Tod Smith; inks: Tod Smith; colors: Len Wein, Tom Ziuko; letters: Todd Klein | The Complex-Complex First, Harry Hokum First |
| 6 | Claw the Unconquered | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Keith Giffen; inks: Pablo Marcos; colors: Len Wein, Tom Ziuko | Claw, Valcan |
| 7 | Clayface [Basil Karlo] | character profile | 0.67 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Marshall Rogers; inks: Marshall Rogers; colors: Len Wein, Tom Ziuko | Batman, Clayface, Dick Grayson, Basil Karlo, Robin, Bruce Wayne |
| 8 | Clayface [Matt Hagen] | character profile | 0.66 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Marshall Rogers; inks: Marshall Rogers; colors: Len Wein, Tom Ziuko | Clayface, Matt Hagen |
| 9 | Clayface [Preston Payne] | character profile | 0.67 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Marshall Rogers; inks: Marshall Rogers; colors: Len Wein, Tom Ziuko | Clayface, Preston Payne |
| 10 | Clock King | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Dan Spiegle; inks: Dan Spiegle; colors: Len Wein, Tom Ziuko | Clock King, Green Arrow, Oliver Queen, William Tockman |
| 11 | Cluemaster | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Carmine Infantino; inks: Bob Smith; colors: Len Wein, Tom Ziuko | Batman, Arthur Brown, Cluemaster, Dick Grayson, Robin, Bruce Wayne |
| 12 | Colonel Computron | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Carmine Infantino; inks: Klaus Janson; colors: Len Wein, Tom Ziuko | Barry Allen, Colonel Computron First, The Flash, Basil Nurblin First, Francine Nurblin First, Luna Nurblin First |
| 13 | Colonel Future | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Eduardo Barreto; inks: Eduardo Barreto; colors: Len Wein, Tom Ziuko | Colonel Future First, Col. Edmond Hamilton First, Clark Kent, Superman |
| 14 | Color Kid | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Keith Giffen; inks: Bob Oksner; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Color Kid, Ulu Vakk |
| 15 | Colossal Boy | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Steve Lightle; inks: Bill Wray; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Gim Allon, Marte Allon, Wynn Allon First, Colossal Boy, Yera Allon |
| 16 | Commander Steel | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jerry Ordway; inks: Jerry Ordway; colors: Len Wein, Tom Ziuko | Commander Steel, Dr. Gilbert Giles First, Hank Heywood |
| 17 | Composite Superman | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Curt Swan; inks: Murphy Anderson; colors: Len Wein, Tom Ziuko | Batman, The Composite Superman, Clark Kent, Joe Meach, Superman, Bruce Wayne |
| 18 | Computo | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Keith Giffen; inks: Gary Martin; colors: Len Wein, Tom Ziuko | Computo, Danielle Foccart First |
| 19 | Congo Bill / Congorilla | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Chuck Patton; inks: Frank Giacoia; colors: Len Wein, Tom Ziuko | Congo Bill, The Congorilla, Janu |
| 20 | The Construct | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Howard Bender; inks: Bill Wray; colors: Len Wein, Tom Ziuko | Batman, Black Canary, The Construct First, Green Arrow, Hawkman, Katar Hol, Clark Kent, Dinah Lance, Princess Diana, Oliver Queen, Superman, Bruce Wayne, Wonder Woman |
| 21 | Controllers | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jerry Bingham; inks: Jerry Bingham; colors: Len Wein, Tom Ziuko; letters: Todd Klein | |
| 22 | Copperhead | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Pat Broderick; inks: Pat Broderick; colors: Len Wein, Tom Ziuko | Batman, Copperhead, Bruce Wayne |
| 23 | Cosmic Boy | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Richard Howell; inks: Karl Kesel; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Cosmic Boy, Rokk Krinn |
| 24 | Cosmic King | character profile | 0.5 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Tom Mandrake; inks: Tom Mandrake; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Laevar Bolto, Cosmic King |
| 25 | The Council | character profile | 0.5 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Carmine Infantino; inks: Larry Mahlstedt; colors: Len Wein, Tom Ziuko | Brains First, Bulldozer First, The Chairman First, Kong First, Matrix-Prime First, Ms. Mesmer First |
| 26 | Count Vertigo | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Trevor Von Eeden; inks: Dick Giordano; colors: Len Wein, Tom Ziuko | Green Arrow, Oliver Queen, Count Vertigo |
| 27 | Crazy-Quilt | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jack Kirby; inks: Greg Theakston; colors: Len Wein, Tom Ziuko | Batman, Crazy-Quilt First, Dick Grayson, Quilt First, Robin, Bruce Wayne |
| 28 | The Creature Commandos | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jerry Ordway; inks: Jerry Ordway; colors: Len Wein, Tom Ziuko | Warren Griffith, Medusa First, Myrna Rhodes, Matthew Shrieve, Elliot "Lucky" Taylor, Vincent Velcro |
| 29 | The Creeper | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Dave Gibbons; inks: Dave Gibbons; colors: Len Wein, Tom Ziuko | The Creeper, Jack Ryder |
| 30 | Crime Doctor | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Denys Cowan; inks: Steve Mitchell; colors: Len Wein, Tom Ziuko | Batman, The Crime Doctor First, Dr. Bradford Thorne First, Bruce Wayne |
| 31 | Crime Syndicate | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Paris Cullins; inks: Terry Austin; colors: Len Wein, Tom Ziuko; letters: Todd Klein | Johnny Quick, Owlman, Power Ring, Superwoman, Ultraman |
| 32 | The Crimson Avenger | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jerry Ordway; inks: Jerry Ordway; colors: Len Wein, Tom Ziuko | The Crimson Avenger, Wing How, Lee Travis, Wing |
| 33 | Croc | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Ed Hannigan; inks: Romeo Tanghal; colors: Len Wein, Tom Ziuko | Batman, Killer Croc First, Waylon Jones First, Bruce Wayne |
| 34 | Cyborg | character profile | 1 | script: Marv Wolfman; pencils: George Pérez; inks: Romeo Tanghal; colors: Len Wein, Tom Ziuko | Cyborg, Victor Stone |
| 35 | Cyclotron | character profile | 1 | script: Len Wein, Marv Wolfman, Todd Klein, Paul Levitz; pencils: Jerry Ordway; inks: Jerry Ordway; colors: Len Wein, Tom Ziuko | The Atom, Terry Curtis, Cyclotron, Firebrand, Terri Kurtzberger First, Al Pratt, Danette Reilly, The Ultra-Humanite |
| 36 | DC Comics | promo (ad from the publisher) | 1 | letters: typeset | |