Question: Who voiced Kermit the Frog in the Muppets television series that aired from 1984 to 1991 on CBS?

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Hack (TV series): Hack is a television series that aired on the American television network CBS from 2002 to 2004.  The show also aired in the United Kingdom on ITV3, in Australia on Network Ten, and in France on M6.  The final four episodes of the first season never aired on ITV3 in the United Kingdom, as the station allowed the broadcast rights to lapse before they were shown, but all episodes from both seasons later aired on CBS Drama and CBS Action.  In the United States, networks were beginning to no longer schedule first-run, scripted programming in prime time on Saturdays; "Hack" would be one of the last series to air on Saturdays for over a decade.  The series was produced by The Thomas Carter Company, Pariah, Big Ticket Television and CBS Productions.  In the United States, the series has been rerun on the Crime & Investigation network and on GetTV, and on HDNet and Universal HD in widescreen.

List of Adventure Time episodes: "Adventure Time" is an American animated television series created by Pendleton Ward for Cartoon Network.  The series follows the adventures of Finn (voiced by Jeremy Shada), a human boy, and his best friend and adoptive brother Jake (voiced by John DiMaggio), a dog with magical powers to change shape and grow and shrink at will.  Finn and Jake live in the post-apocalyptic Land of Ooo.  Throughout the series, they interact with the show's other main characters: Princess Bubblegum (voiced by Hynden Walch), the sovereign of the Candy Kingdom; the Ice King (voiced by Tom Kenny), a demented but largely misunderstood ice wizard; Marceline the Vampire Queen (voiced by Olivia Olson), a thousand-year-old vampire and rock music enthusiast; Lumpy Space Princess (voiced by Ward), a melodramatic and immature princess made out of "irradiated stardust"; BMO (voiced by Niki Yang), a sentient video game console-shaped robot that lives with Finn and Jake; and Flame Princess (voiced by Jessica DiCicco), a flame elemental and ruler of the Fire Kingdom.  The pilot first aired in 2007, and it was later re-aired on the incubator series "Random!  Cartoons" on Nicktoons Network.  The pilot eventually leaked onto the internet and became a cult hit on YouTube.  After Nickelodeon declined to turn the short into a full-fledged show, Cartoon Network purchased the rights, and "Adventure Time" launched as a series on April 5, 2010.

Sesame Street News Flash: The Sesame Street News Flash was a recurring segment on the children's television show "Sesame Street".  First aired in 1971, the series starred Kermit the Frog as a trench coat-dressed roving reporter who interviews Muppet versions of characters from fairy tales, Mother Goose nursery rhymes and key moments in history.

Kermit the Frog: Kermit the Frog is a Muppet character and Jim Henson's most well-known creation.  Introduced in 1955, Kermit serves as the straight man protagonist of numerous Muppet productions, most notably "Sesame Street" and "The Muppet Show", as well as in movies, specials, and public service announcements through the years.  Henson originally performed Kermit until his death in 1990; Steve Whitmire performed Kermit from that time up until his dismissal from the role in 2016.  Kermit is currently performed by Matt Vogel.  He was also voiced by Frank Welker in "Muppet Babies" and occasionally in other animation projects.

Muppet Babies: Jim Henson's Muppet Babies, commonly known by the shortened title Muppet Babies, is an American animated television series that aired from September 15, 1984 to November 2, 1991 on CBS.  The show portrays childhood versions of the Muppets living together in a nursery under the care of a human woman called Nanny.  Nanny appears in almost every episode, but her face is never visible, only the babies' view of her pink skirt, purple sweater, and distinctive green and white striped socks is shown.  The idea of presenting the Muppets as children first appeared in a dream sequence in "The Muppets Take Manhattan" (1984), released two months before "Muppet Babies" debuted, in which Miss Piggy imagined what it would be like if she and Kermit the Frog had grown up together.

Bret McKenzie: Bret Peter Tarrant McKenzie, ONZM (born 29 June 1976) is a New Zealand comedian, actor, musician and producer, best known for being one half of the Grammy Award-winning musical comedy duo Flight of the Conchords along with Jemaine Clement.  The duo's comedy and music became the basis of a BBC radio series and then an oft-lauded American television series, which aired for two seasons on HBO.  McKenzie served as music supervisor for two Muppet films, "The Muppets "(2011) and "Muppets Most Wanted "(2014), the former of which won him an Academy Award for Best Original Song for the song "Man or Muppet".  His latest work has seen him write the lyrics to the 2016 Sainsburys Christmas advert featuring James Corden on vocals.

Mr. Willowby's Christmas Tree: Mr. Willowby’s Christmas Tree is a television Christmas special that first aired December 6, 1995 on CBS.  The special stars Robert Downey, Jr., Leslie Nielsen, and Stockard Channing.  It also features Kermit the Frog as a narrator and various other Muppets created exclusively for the special.

Little Muppet Monsters: Little Muppet Monsters is a Saturday morning television series featuring the Muppets that aired three episodes on CBS in 1985.  The first season of "Muppet Babies" did so well in the ratings, that CBS decided to expand the series from a half-hour to an hour, pairing "Muppet Babies" with "Little Muppet Monsters".  They called the hour-long package "Muppets, Babies and Monsters".

Steve Whitmire: Steven Lawrence "Steve" Whitmire (born September 24, 1959) is an American puppeteer who has worked on The Muppets and "Sesame Street".  Beginning his involvement with the Muppets in 1978, Whitmire inherited the roles of Kermit the Frog and Ernie, after Jim Henson's death in 1990; he performed the characters until 2016 and 2014, respectively.  As part of the Muppet cast, he has appeared in multiple feature films and television series, performing a variety of characters on "The Muppet Show", "Sesame Street", and "Fraggle Rock" and during such occupations has worked for the Jim Henson Company, Sesame Workshop, and the Muppets Studio.

List of Muppets: The Muppets are an ensemble group of comedic puppet characters originally created by Jim Henson.  The Muppets have appeared in multiple television series, films, and other media appearances since the 1950s.  The majority of the characters listed here originated on "The Muppet Show", a television series that aired from 1976 to 1981.  Since then, several more characters have been introduced in other television series, as well as theatrical films.

Supporting paragraphs: Kermit the Frog Muppet Babies
Answer: Frank Welker