History Foreshadowing / WesternAnimation

** In "Barnacle Face", Pearl has been breaking out in barnacles, so she tries to scrub her barnacles with her soap, with no avail. But when SpongeBob took a look at the soap, he comments how the soap "smells so wonderful." [[spoiler: Which would later reveal, that the soap Pearl uses is made out of Krabby Patties!]]

*** As the camera follows Twilight Sparkle when she's dictating her letter to Celestia, the hourglass distorts everything behind it like you'd expect, but ''replaces'' the unicorn head sculpture outside with Nightmare Moon's head.

** Silkie can be briefly spotted in a few season 3 episodes before being properly introduced in "Can I Keep Him?", serving as foreshadowing that Beast Boy kept the moth larva he held in season 2's "Date with Destiny".

* Happens a lot in ''WesternAnimation/{{Rollbots}}'', most notably with Vertex collecting parts of the [[ArtifactOfDoom Dymex Key]] and with references to a lost tribe.
** ''[[GroundhogDayLoop Crontab trouble]]'' starts with Spin sleep-talking "Zuuuuuuuuuushiiiiiiiiiiin".
%%*** The same episode, and later ''R.O.S.E.'' hint at a relationship between Pounder and Vertex.

** In "Escape from Mystery Manor", Danny Darrow thinks Fred is Brad Chiles of the original gang, and refers to him as "Big Chin Man." The physical resemblances between them foreshadow that [[spoiler:Brad is Fred's real father.]]

* ''WesternAnimation/TeenTitans2003'': "Spellbound" introduces us to the character Malchior of Nol, a powerful dragon-slaying mage from another dimension who Raven reads a book about and becomes enamored with when he himself appears, though is only a spirit trapped in a book. "Malchior" is a suitably mystical-sounding name, being only one letter off from "Melchior," an attributed name to one of the Biblical Magi, but look at exactly ''what'' the one-letter difference is: by replacing the E with an A, it becomes "mal", a common prefix derived from the Latin for "evil." [[spoiler:Sure enough, that's no coincidence: Malchior wasn't the mage, he was the dragon, and takes on his true form at the end to become the episode's villain.]]

** In "Baby Race", Chilli asks her mother-in-law for advice raising Bluey instead of her mother, and in "Granddad", we see Chilli's father, but not her mother. "Dragon" would later reveal that Chilli's mother [[MissingMom is dead]].

** Dianne was the first person to accuse someone as the murderer, and she first accused Tom Tucker, the
prime suspect, as the killer.
** spoiler: If you pay attention, when all of the guest were arguing with one another, and Derek went to the roof to get a signal, you'll notice that Dianne is absent.

** [[spoiler: Dianne was the first person to accuse someone as the murderer, and she first accused Tom Tucker, the
prime suspect, as the killer.]]
** [[spoiler: If you pay attention, when all of the guest were arguing with one another, and Derek went to the roof to get a signal, you'll notice that Dianne is absent.]]

* ''WesternAnimation/Clarence'', In "In Dreams", the first sign that Clarence didn't actually close the garage door is that he's seen doing it in his regular clothes rather than in the pajamas he was wearing in the previous scene.

[[spoiler: **Dianne was the first person to accuse someone as the murderer, and she first accused Tom Tucker, the
prime suspect, as the killer.
** If you pay attention, when all of the guest were arguing with one another, and Derek went to the roof to get a signal, you'll notice that Dianne is absent.]]