The channel was launched as Antena.Neox in 2005 together with
Antena.Nova, with the aim of strengthening the Antena 3 brand in the recently launched
digital terrestrial television in Spain. At first Neox was a channel that mixed children's and youth programming. In 2006 Antena 3 and
CBS Corporation signed an agreement to broadcast content produced by
CBS,
Showtime and
UPN, which would be programmed on Antena.Neox, Antena.Nova and Antena 3 until the Showtime and UPN brands were implemented on the Spanish television replacing Neox and Nova, however, the change was not carried out in the end due to the distribution of broadcasting rights with other Spanish channels. However, Antena 3 obtained the rights to broadcast future productions of CBS Corporation. On January 1, 2009 Antena.Neox was renamed as Neox 8 in order to associate the channel with that
logical channel number on
digital terrestrial television. Finally, on August 6, 2010, it adopted the current name. On December 30, 2011, the channel premiered "Feliz Año Neox", a special year-end program that is broadcast one day before the established date and which became an annual tradition of the channel. On June 29, 2013, the channel introduced
Neox Kidz, a children programming block that is broadcast in the morning replacing Megatrix. In May 2014, the channel added docuseries and movies to its programming due to the closure of
Nitro,
Xplora and
la Sexta 3, in addition to adding new series and children's content to the signal. In October 2017, the channel temporarily incorporated
The Simpsons into its daytime program, because Antena 3's morning show had to be extended in its time to cover important political information at the time. Finally, in September 2018 The Simpsons began to be broadcast exclusively on Neox, completely abandoning Antena 3. On May 23, 2019, the channel achieved its best audience record to date when 1,636,000 people tuned in to the final episode of
The Big Bang Theory, which meant a 9.8% audience at the time and an average of 4.4% daily audience. In December 2020, Neox Kidz became Kidz, focusing on Atresplayer with on-demand content and a 24h web TV. On 7 January 2025, the programming block Kidz has extended its hours to 10am on weekdays and 2pm at weekends by acquiring
Miraculous following the closure of the
Disney Channel. ==Programming==