In the Marvel Cinematic Universe (MCU), Chronicoms, based on the lower-ranked TVA Chronomonitors, are introduced in the fourth season finale of Agents of S.H.I.E.L.D.

[6] In 1985–1986, Mark Gruenwald wrote a deconstructionist multiverse storyline featuring the Squadron Supreme in a self-titled twelve-issue limited series.

[7] The concept of a timeline monitoring organization had previously been explored in a Captain Britain story arc originally published in the Marvel UK series The Daredevils #6–8 (1983).

However, Alan Davis has said that it was invented by Dave Thorpe, the previous writer of the UK-published Captain Britain stories.

[11] While Captain Britain's 1983 story arc does not mention the Time Variance Authority, the Dimensional Development Court contains elements that were plainly retconned by Walt Simonson and Sal Buscema[citation needed] and in subsequent incarnations (such as the TVA employees—chronomonitors—functioning and appearing in new universes in the same manner as the Captain Britain Corps).

They were first seen allowing Justice Peace, a lawman from the future, to travel to the 20th century in order to stop the killer Zaniac.

The scope of their influence is bordered by Alioth in the distant past as well as Kang the Conqueror, the Delubric Consortium, and Revelation at different eras throughout the timescape.

The process also ends up creating the Time Twisters, a trio of beings who imperiled all realities until stopped by Thor and other members of the Avengers.

[15] During the "Venom War" storyline, the Time Variance Authority arrives following a fight with the Zombiotes to bring in Jimmy Hudson because he is from another universe.

The moment a new reality appears, a new faceless agent is created to monitor it, along with the necessary equipment (a personal computer-like device, plus a desk and a chair) to do so.