History TimeshiftedActor / LiveActionTV

* ''Series/AvatarTheLastAirbender2024'', although Zuko averts this trope this time, Korra is not played by Creator/{{Kiawentiio}}, instead by Creator/MeadowKingfisher.

* ''Series/YoungSheldon'': In ''Series/TheBigBangTheory'', Sheldon's mother is played by Creator/LaurieMetcalf. In Young Sheldon, her younger self is played by Laurie Metcalf's daughter, Creator/ZoePerry. This also applies to Sheldon, Missy and Connie (Meemaw), portrayed by Iain Armitage, Reagan Record and Creator/AnniePotts respectively instead of Creator/JimParsons, Courtney Henggeler and Creator/JuneSquibb. Georgie is portrayed by a Time-Sifted in the opposite direction. He's played by Montana Jordan in ''Young Sheldon'', but hadn't appeared in ''The Big Bang Theory'' at the time. When Georgie finally did show up in ''Big Bang'' episode "The Sibling Realignment", he was played by Creator/JerryOConnell.

** 3x04 averts this mostly; Ardal O'Hanlon continues to play AmusingAlien George Sunday as his body rapidly ages to the extent that he is forced to pretend to be his own grandfather. Eventually, however, he ages even further and appears played by an elderly actor, but his voice is still dubbed by O'Hanlon. HilarityEnsues when an attempt at reversing George's physical age works too well, regressing him into a baby which appears as O'Hanlon's adult face superimposed over an infant actor.

** Catherine Langford takes the prize with ''five'' actresses. First, there are the two portraying her in the original film (Kelly Vint as a child, Creator/VivecaLindfors as an adult). Then there are the actresses from the show (Nancy McClure as young circa 1945, Glynis Davies as adult in 1969, Elizabeth Hoffman as primary appearance).

* ''Franchise/StarWars: Series/{{Ahsoka}}'': In the present day of the show, Creator/RosarioDawson plays Ahsoka Tano, who at this point in the timeline is somewhere in her mid-forties. However, flashbacks to [[WesternAnimation/StarWarsTheCloneWars the Clone Wars]] have the teenage Ahsoka played by the teenage Arianna Greenblatt, which really hammers home [[ChildSoldier just]] [[HarmfulToMinors how]] [[AChildShallLeadThem young]] Ahsoka was when she first went to war.

* ''Franchise/StarWars: Series/{{Ahsoka}}'': In the present day of the show, Creator/RosarioDawson plays Ahsoka Tano, who at this point in the timeline is somewhere in her mid-forties. However, flashbacks to [[WesternAnimation/StarWarsTheCloneWars the Clone Wars]] have the teenage Ahsoka played by the teenage Creator/AriannaGreenblatt, which really hammers home [[ChildSoldier just]] [[HarmfulToMinors how]] [[AChildShallLeadThem young]] Ahsoka was when she first went to war.

* In the 1996 MiniSeries ''Rhodes'', Cecil Rhodes was played by Creator/MartinShaw and "Young Cecil Rhodes" was played by Shaw's son, Joe Shaw.

*** Played straight at first in "Tapestry", as Marcus Nash plays young Picard when he sees himself getting stabbed, but then averted when Creator/PatrickStewart plays young Picard for the rest of the episode.

* ''Series/TheReallyLoudHouse'': The episode "Heart and Soul" shows a flashback featuring Justin Allan as a younger Lincoln (Wolfgang Schaeffer) and Ava Torres as a younger Luna (Sophia Woodward).

** [[Recap/DoctorWhoS30E16TheWatersOfMars "The Waters of Mars"]]: One-off companion Adelaide Brooke is played by Rachel Fewell as a child, and Lindsay Duncan as an adult.

** Catherine Langford takes the prize with ''five'' actresses. First, there are the two portraying her in the original film (Kelly Vint as a child, Viveca Lindfors as an adult). Then there are the actresses from the show (Nancy McClure as young circa 1945, Glynis Davies as adult in 1969, Elizabeth Hoffman as primary appearance).

** In ''Series/HouseOfTheDragon'', due to Season 1's ''many'' {{Time Skip}}s, several characters have different actors to portray them as children, late teens then as adults/young adults, most prominently Rhaenyra Targaryen (Creator/MillyAlcock then Creator/EmmaDArcy by Episode 6 of Season 1, D'Arcy still did the OpeningNarration of the series in the first episode), Alicent Hightower (Creator/EmilyCarey then Creator/OliviaCooke), Laenor Velaryon (Theo Nate then John Macmillan), Laena Velaryon (Nova Foueillis-Mosé, then Savannah Steyn, then Nanna Blondell), Aemond Targaryen (Leo Ashton then Creator/EwanMitchell) and Aegon II Targaryen (Ty Tennant then Creator/TomGlynnCarney). Ditto with the rest of the Targaryen-Hightower and Targaryen-Velaryon children.