Question: What series did the author of Teenage Mutant Ninja Turtles co-create with Jim Lawson?
Context: Teenage Mutant Ninja Turtles is a 2014 American action adventure film based on the Mirage Studios characters of the same name.  It is the fifth film in the "Teenage Mutant Ninja Turtles" film series, and is also a reboot that features the main characters portrayed by a new cast, as the first in the reboot series.  The film was directed by Jonathan Liebesman, written by Josh Appelbaum, André Nemec and Evan Daugherty, and stars Megan Fox, Will Arnett, William Fichtner, Minae Noji, Whoopi Goldberg, Abby Elliott and Tohoru Masamune, and featuring the voices of Johnny Knoxville, Alan Ritchson, Noel Fisher, Jeremy Howard and Tony Shalhoub.  The film was announced shortly before "Teenage Mutant Ninja Turtles" co-creator Peter Laird sold the rights to the characters to Nickelodeon in October 2009. The Rat King is a fictional character from the Teenage Mutant Ninja Turtles multimedia franchise.  The character was created by Jim Lawson and first appeared in the comic "Tales of the Teenage Mutant Ninja Turtles" #4 written by Jim Lawson and has made various appearances since, in the comic books and other media, such as animated series' and video games. Teenage Mutant Ninja Turtles: Out of the Shadows is a 2016 American action adventure film based on the Mirage Studios characters of the same name.  It is the sixth film in the "Teenage Mutant Ninja Turtles" film series and a sequel to the 2014 film "Teenage Mutant Ninja Turtles".  The film was directed by Dave Green, written by Josh Appelbaum and André Nemec, and stars Megan Fox, Stephen Amell, Will Arnett, Brian Tee, Tyler Perry, Brittany Ishibashi and Laura Linney, and featuring the voices of Pete Ploszek, Alan Ritchson, Noel Fisher, Jeremy Howard, Tony Shalhoub, Gary Anthony Williams, Stephen "Sheamus" Farrelly and Brad Garrett. Teenage Mutant Ninja Turtles (also known as Tales of the Teenage Mutant Ninja Turtles for its fifth season) is an American 3D rendered computer animated television series.  It premiered on Nickelodeon in the United States on September 29, 2012.  It is the third animated "Teenage Mutant Ninja Turtles" television series.  It is produced by Nickelodeon Animation Studio.  Composer Sebastian Evans provides the show's score. Peter Alan Laird (born January 27, 1954) is an American comic book writer and artist.  He is best known for co-creating the Teenage Mutant Ninja Turtles with writer and artist Kevin Eastman. Teenage Mutant Ninja Turtles III: Radical Rescue, released as Teenage Mutant Hero Turtles III: Radical Rescue in Europe, and Teenage Mutant Ninja Turtles 3: Turtles Kiki Ippatsu (Teenage Mutant Ninja Turtles 3: タートルズ危機一発 ) in Japan, is a Game Boy game by Konami, released in November 1993.  It is the third and final Game Boy game based on the Ninja Turtles, following "" and "". Teenage Mutant Ninja Turtles: Turtles in Time, released as Teenage Mutant Hero Turtles: Turtles in Time in Europe, is an arcade video game produced by Konami.  A sequel to the original "Teenage Mutant Ninja Turtles" ("TMNT") arcade game, it is a scrolling beat 'em up type game based mainly on the 1987 "TMNT" animated series.  Originally an arcade game, "Turtles in Time" was ported to the Super Nintendo Entertainment System in 1992 under the title Teenage Mutant Ninja Turtles IV: Turtles in Time, continuing the numbering from the earlier "Turtles" games released on the original NES.  That same year, a game that borrowed many elements, "" was released for the Mega Drive/Genesis. Jim Lawson (born February 19, 1960) is an American comic book writer and artist best known for his work on the Teenage Mutant Ninja Turtles series.  Lawson created the Rat King and also co-created the series "Planet Racers" with Peter Laird.  He is also the writer/artist of the black-and white-comic series "".  For more than 20 years he was a writer and artist of TMNT comics, but in 2009 he announced that he would depart from "TMNT" following Peter Laird's sale of the property to Viacom. Teenage Mutant Ninja Turtles: Danger of the Ooze is a 2.5D platform video game developed by WayForward Technologies and published by Activision.  It is the second video game based on the 2012 "Teenage Mutant Ninja Turtles" TV series and features elements from the show's second and third seasons.  It was released as a sequel to the 2013 game "Teenage Mutant Ninja Turtles".  The game also features gameplay elements and homages to the 1989 "Teenage Mutant Ninja Turtles" NES game. Teenage Mutant Ninja Turtles III, also known as Teenage Mutant Ninja Turtles III: Turtles In Time, is a 1993 American fantasy action comedy film written and directed by Stuart Gillard, based on the comic book characters the Teenage Mutant Ninja Turtles.  It is the second sequel to the 1990 live-action "Teenage Mutant Ninja Turtles" film.  It was produced by Clearwater Holdings Ltd. and Golden Harvest.  This was the last "Teenage Mutant Ninja Turtles" film released by New Line Cinema and released on VHS along with Columbia TriStar Home Video.  It was internationally distributed by 20th Century Fox.
Answer: Planet Racers