Children's programming on Univision

In 1987, the network's first foray into children's programming block, Univision Infantiles from every Saturday morning and featured Spanish-language dubs of Japanese anime productions-shows (such as The Adventures of the Little Prince, Princess Knight, Nobody's Boy: Remi, Time Bokan, Moonlight Mask, Treasure Island and Future Boy Conan) as well as the live-action and puppet show (El Tesoro del Saber and Captain Power and the Soldiers of the Future). Later in 1988, the block has featured a mix of acquired programming from various providers, including DIC Entertainment (Ulysses 31) and World Events Productions (Voltron: Defender of the Universe). The blocks were discontinued after August 10, 1991, along with Univision y Los Niños and Platavision (the block were discontinued after August 11, 1991) immediately pulling the block from its schedule, it was replaced by Chispavision.

In 1989, Univision launched on Monday to Friday and Saturday morning block as Univision y Los Niños ("Univision and the Kids" and/or "Univision and Children"), along agreement and joint venture companies including DIC Entertainment, World Events Productions, TMS Entertainment and France 3 (Univision acquired that channel in 1988, one year after the block launched). The programming consisting four 30-minute episodes with Spanish-dubbed versions of the America, Japan, Canada and France animated shows, across of the DIC Animation City and Saban Entertainment (with the cartoon shows are distributor by Lexington Broadcast Services Company, Hallmark Cards, SFM Entertainment and Atkinson Film-Arts. Nicolas sold his stake in the network to a partnership of Hallmark Cards and Televisa for 25 years, which formed Univision Holdings Inc.) animated-cartoon shows such as Jayce and the Wheeled Warriors, Kidd Video, Rainbow Brite, and The Adventures of Teddy Ruxpin. The program has the other shows are non-block aired schedule on every Saturday morning was considered a sub-block of Univision Infantiles on Univision including Treasure Island, Once Upon a Time... Life, Once Upon a Time... Man, Princess Knight and Voltron: Defender of the Universe, and customized animated openings, closings and bumpers. The programs are produced in English by DIC Enterprises and dubbed in Spanish. Coincidently, the block ran from 1989, until Univision y Los Niños were discontinued in 1991, the following week of the new block launched as Chispavision.

Univision announcing with the new block in 1990 called Platavision on every weekday morning block, such as the live-action Spanish-language sitcom are Pepe Plata and the one DIC Entertainment-produced show including Beverly Hills Teens.

In 1991, Univision launched a weekday morning block as Chispavision, including the four DIC shows such as COPS, Captain N: The Game Master, Inspector Gadget and The Super Mario Bros. Super Show!. One such notable program was El Show de Xuxa ("The Xuxa Show"), a variety-based series starring the Southern Brazilian entertainer, which became a hit in the U.S. when it debuted on the network in 1992 (Xuxa would subsequently star in an American syndicated version of the program that aired for one season from 1993 to 1994).[1][2][3]

In April 1995, Univision test-marketed Plaza Sésamo ("Sesame Street"), Televisa and Children's Television Workshop's (now Sesame Workshop) Spanish-language adaptation of Sesame Street featuring a mix of original segments featuring characters based on its U.S.-based parent series and dubbed interstitials from the aforementioned originating program, on its owned-and-operated stations in Los Angeles, Dallas and Miami. The success of the test run led the network to begin airing the program nationally beginning on December 11 of that year; the program aired on Univision until 2002, when it moved to its newly created sister network TeleFutura as part of its "Mi Tele" ("My TV") block (the Univision network resumed its relationship with the now-Sesame Workshop when it debuted the U.S.-based Spanish language spin-off Sesame Amigos ("Sesame Friends") in August 2015).[4][5] The network aired its children's programs on weekday and Saturday mornings until April 1997, when Univision relegated its children's programming exclusively to Saturday mornings to make room for its new morning news/talk/lifestyle program ¡Despierta América!.

In February 1996, Univision's brand new launched on weekend morning block as La Piñata Loca ("The Crazy Piñata"), will be hosted by comedian George Ortuzar. The programming will lineup consisted of Spanish dubs of various Hanna-Barbara, World Events Productions, Tatsunoko Productions and Ravensburger shows including The Flintstone Kids, Yogi Bear, Wacky Racers, The Amazing Chan and the Chan Clan, Amigo and Friends, Denver, the Last Dinosaur, The Prince of Atlantis and Speed Racer. Following by the second block in 1997 is launching Giorgiomania will be still host of comedian (George O) are the same as the first block, the block has produced joint venture of Film Roman such as Cro. The block were discontinued in 2000, after Giorgiomania ending the program block in 1999. However, the following few weeks will be launched as ¡De Cabeza!.

In September 16, 2000, Univision launched a Saturday morning block as ¡De Cabeza! ("On Your Head!"), along with joint venture company including A.D. Vision, Funimation, Tokyo Movie Shinsha, Film Roman and Televisión Española. Programs seen during this time included Tenchi Muyo! (as well as Tenchi Universe and Tenchi in Tokyo), Lost Universe, Red Baron, Bruno the Kid, Mimi & Mr. Bobo and The Twisted Tales of Felix the Cat. However, the block were discontinued in September 8, 2001, the following week will be launched as the original, Planeta U debuted on September 15, 2001. Mimi & Mr. Bobo carried over to the block along with Plaza Sesamo and Juanito Jones. Tenchi Universe, Lost Universe and Red Baron are moving to Univision's sister-network Telefutura's Toonturama for the first time in nearly a year aired in block, along with the two Film Roman-produced animation shows such as Bruno the Kid and The Twisted Tales of Felix the Cat from 2002 to 2005.

In 2003, Univision reduced the amount of children's programming on its schedule, reserving weekend morning and Saturday early afternoon timeslots for youth-oriented telenovelas. Following an agency investigation resulting from complaints by the United Church of Christ and the National Hispanic Media Coalition during license renewal proceedings for a Univision-owned television station in 2005, in February 2007, the FCC levied a $24 million fine – the largest single FCC fine filed against any corporation to that point – against the network's 24 owned-and-operated stations for circumventing federal guidelines requiring broadcast television stations and networks to air at least three hours of educational programming aimed at children by claiming the novelas (with the Televisa-produced Cómplices Al Rescate ("Friends to the Rescue") specifically cited as one example, due to the incorporation of occasional adult themes in some plotlines and complex subplots that were not suitable for younger children) as compliant educational programs in Children's Television Act filings for 116 weeks between 2004 and early 2006. The fine was paid as a component of a settlement that preceded the FCC's approval of Univision's acquisition by Broadcasting Media Partners Inc. to resolve then-pending license renewal applications for O&Os WQHS-TV in Cleveland and KDTV in San Francisco.[6][7][8][9][10]

Through Univision's agreement to carry more programming that directly complies with the Children's Television Act's educational requirements in its payment of the fine, on April 5, 2008, the network launched a Saturday morning children's programming block, Planeta U ("Planet U"), consisting of Spanish-dubbed versions of American children's programs (with Dora the Explorer, Go, Diego, Go!, Maya & Miguel, Jakers! The Adventures of Piggley Winks, Inspector Gadget's Field Trip and Beakman's World as part of its inaugural lineup).[11][12]

A sub-block during the first two hours of the block, "Disney Junior en Univision", debuted within "Planeta U" on May 31, 2014, featuring dubbed versions of Disney Junior original series (with Mickey Mouse Clubhouse and Handy Manny as the first to air as part of the sub-block; the latter's dub incorporates basic instruction in English words and phrases instead of those in Spanish, as the English version features).[13][14][15]

Due to regulations defined by the Children's Television Act that require stations to carry E/I compliant programming for three hours each week at any time between 7:00 a.m. and 10:00 p.m. local time, some Univision stations may defer certain programs aired within its Saturday morning block to Sunday daytime or earlier Saturday morning slots, or (in the case of affiliates in the Western United States) Saturday afternoons as makegoods to comply with the CTA regulations.