Question: Joe Casey is one of the creators of an animated TV series that has grossed over how much in retail sales worldwide?

Context paragraphs:
The Intimates: The Intimates was a twelve-issue American comic book limited series, written by Joe Casey and published by DC Comics' Wildstorm imprint.  The series were created by Joe Casey, Jim Lee and Giuseppe Camuncoli.

Global financial crisis in November 2008: October sales of cars and light trucks in the United States fell precipitously in 2008 when compared with sales in October 2007, with General Motors falling 45%, Ford falling 30%, Chrysler falling 35%, Toyota falling 23%, Honda falling 25%, and Nissan falling 33%.  Much of the falloff in sales was attributable to customers being unable to arrange financing.  Except for Wal-Mart, which posted a slight gain, retail sales were off during October 2008 as compared with October 2007 in the United States with some moderate priced stores reporting double digit decreases.  October retail sales were down 4.1% from October 2007 and down 2.8% from September 2008 with sales of cars and auto parts leading the way with a 23.4% decline from October 2007, and a 31.9% decline from September 2008.

Power Rangers: Power Rangers is an American entertainment and merchandising franchise built around a live action superhero television series.  Produced first by Saban Entertainment, later by BVS Entertainment, and today by SCG Power Rangers, the television series takes much of its footage from the Japanese tokusatsu "Super Sentai", produced by Toei Company.  The first "Power Rangers" entry, "Mighty Morphin Power Rangers", debuted on August 28, 1993, and helped launch the Fox Kids programming block of the 1990s, during which it catapulted into popular culture along with a line of action figures and other toys by Bandai.  s of 2001 , the media franchise has generated over $6 billion in retail sales worldwide.

Our Worlds at War: "Our Worlds at War" was a comic book storyline, published by DC Comics in mid-2001.  OWAW was a crossover storyline that spanned several different books, including several books starring Batman, Superman and Wonder Woman, The Flash, Green Lantern, and a number of supporting characters and books.  Creators involved in the crossover included writers Jeph Loeb, Joe Casey, Mark Schultz, Joe Kelly, Phil Jimenez, and Peter David, and artists that included Mike Wieringo, Ed McGuinness, Doug Mahnke, Ron Garney, and Leonard Kirk.

Duncan Rouleau: Duncan Rouleau is an American comic book writer and artist, and is a part of the Man of Action Studios collective of creators (along with Joe Casey, Joe Kelly, Steven T. Seagle), who created the series "Ben 10", that aired on Cartoon Network.

Joe Casey: Joe Casey is an American comic book writer.  He has worked on titles such as "Wildcats 3.0", "Uncanny X-Men", "The Intimates", "Adventures of Superman", and "G.I. Joe: America's Elite" among others.  As part of the comics creator group Man of Action Studios, Casey is one of the creators of the animated series "Ben 10".

Christopher Jones (comics): Christopher Jones (born October 14, 1969) is an American comic book artist living in Minneapolis, Minnesota.  He contributes artwork for DC Comics' Young Justice (2011-2013), based on the animated TV series of the same name & written by Greg Weisman, and Marvel's (2012–present), based on the animated TV series of the same name & written by Christopher Yost.  Christopher Jones has previously contributed art to The Batman Strikes!  (2004-2008), based on the animated TV series, The Batman, is the co-creator of Dr. Blink Superhero Shrink and has drawn various projects for DC, Marvel, Disney, and other publishers, ranging from kids' titles such as Superhero Squad to horror titles such as Re-Animator.

Oscar's Orchestra: Oscar's Orchestra is a British children's animated TV series that ran from 1994 to 1996 comprising a total of three seasons and 39 episodes.  The series was produced by the popular British animation studio Collingwood O'Hare Entertainment (who is also famous for producing other such animated TV series and films as "Dennis the Menace", "Captain Zed and the Zee Zone", "The Secret Show" and "Rarg") in association with Warner Music Vision and Europe Images and was originally shown on the BBC as part of their children's block CBBC.  It also aired on the British children's cable networks The Children's Channel (TCC) and Nickleodeon and has broadcast in over more than 100 different countries worldwide such as ARD in Germany, France 2 in France and ABC in Australia.

Pound Puppies: Pound Puppies was a popular toy line sold by Tonka in the 1980s.  It later inspired an animated TV special, two animated TV series, and a feature film.  Shipments of the toys over five years generated sales of $300 million in 35 countries.

Ben 10: Ben 10 is an American animated TV series and media franchise created by Man of Action Studios and produced by Cartoon Network Studios.  The franchise revolves around a boy named Ben Tennyson who acquires a watch-like alien device (the Omnitrix) which allows the wearer to transform into ten different alien creatures.  The "Ben 10" franchise has received wide critical acclaim, winning three Emmy Awards.  Worldwide it has grossed over $4.5 billion in retail sales.  The franchise has four movies, all of which aired on Cartoon Network between August 2007 and March 2012.  With a 12-year old franchise, it is the longest Cartoon Network original series to date.

Supporting paragraphs: Joe Casey Ben 10
Answer: $4.5 billion