Speedy Gonzales in the context of "Robert McKimson"

Melvin Jerome Blanc (born Blank /blæŋk/; May 30, 1908 – July 10, 1989) was an American voice actor and radio personality whose career spanned over 60 years. During the Golden Age of Radio, he provided character voices and vocal sound effects for comedy radio programs, including those of Jack Benny, Abbott and Costello, Burns and Allen, The Great Gildersleeve, Judy Canova and his own short-lived sitcom.

Blanc became known worldwide for his work in the golden age of American animation as the voices of Bugs Bunny, Daffy Duck, Tweety, Sylvester the Cat, Yosemite Sam, Wile E. Coyote and the Road Runner, Speedy Gonzales, Marvin the Martian, Foghorn Leghorn, the Tasmanian Devil, Pepé Le Pew and numerous other characters from the Looney Tunes and Merrie Melodies theatrical cartoons. Blanc also voiced the Looney Tunes characters Porky Pig and Elmer Fudd after replacing their original performers, Joe Dougherty and Arthur Q. Bryan, respectively, although he occasionally voiced Elmer during Bryan's lifetime as well. He later voiced characters for Hanna-Barbera's television cartoons, including: Barney Rubble and Dino on The Flintstones, Mr. Spacely on The Jetsons, Secret Squirrel on The Atom Ant/Secret Squirrel Show, the title character of Speed Buggy, and Captain Caveman on Captain Caveman and the Teen Angels and The Flintstone Kids. He was also the voice of Gideon's hiccups in Pinocchio, his only appearance at Disney. Blanc was also the voice of Woody Woodpecker in the first four animated shorts from 1940 to 1941, his only appearance at Universal Pictures. He also provided the screams for Tom and Jerry in the short films from 1963 to 1967, in just 34 short films directed by Chuck Jones.

Isadore "Friz" Freleng (/ˈfriːləŋ/ FREE-ləng; August 21, 1905 – May 26, 1995), credited as I. Freleng early in his career, was an American animator, cartoonist, director, producer, and composer known for his work at Warner Bros. Cartoons on the Looney Tunes and Merrie Melodies series of cartoons from the 1930s to the early 1960s. In total he created more than 300 cartoons.

He introduced and/or developed several of the studio's biggest stars, including Bugs Bunny, Porky Pig, Tweety, Sylvester, Yosemite Sam (to whom he was said to bear more than a passing resemblance), Granny, and Speedy Gonzales. The senior director at Warners' Termite Terrace studio, Freleng directed more cartoons than any other director in the studio (a total of 266), and is also the most officially-honored of the Warner directors, having won five Academy Awards and three Emmy Awards. After Warner closed down the animation studio in 1963, Freleng and business partner David H. DePatie founded DePatie–Freleng Enterprises, which produced cartoons (including The Pink Panther Show), feature film title sequences, and Saturday-morning cartoons. After the company's dissolution in 1981, Freleng joined Warner Bros. relaunched animation division and produced several Looney Tunes one-off specials and compilation films.

The Looney Tunes and Merrie Melodies series of animated shorts released by Warner Bros. feature a range of characters which are listed and briefly detailed here. Major characters from the franchise include Bugs Bunny, Daffy Duck, Elmer Fudd, Foghorn Leghorn, Marvin the Martian, Porky Pig, Speedy Gonzales, Sylvester the Cat, the Tasmanian Devil, Tweety, Wile E. Coyote and the Road Runner, and Yosemite Sam. This list does not include characters from Looney Tunes-related television series, like Tiny Toon Adventures characters, Animaniacs characters, or Duck Dodgers characters, as they have their own list.

Daffy Duck is a fictional cartoon character created by animators Tex Avery and Bob Clampett for Leon Schlesinger Productions. Styled as an anthropomorphic black duck, he has appeared in cartoon series such as Looney Tunes and Merrie Melodies, in which he is usually depicted as a foil for either Bugs Bunny, Porky Pig, or Speedy Gonzales. He was one of the first of the new "screwball" characters that emerged in the late 1930s to replace traditional everyman characters who were more popular earlier in the decade, such as Mickey Mouse, Porky Pig, and Popeye.

Daffy starred in 130 shorts in the golden age, making him the third-most frequent character in the Looney Tunes/Merrie Melodies cartoons, behind Bugs Bunny's 168 appearances and Porky Pig's 153 appearances. Virtually every Warner Bros. cartoon director, most notably Bob Clampett, Robert McKimson, and Chuck Jones, put his own spin on the Daffy Duck character.