List of rumors of ancient civilizations in the Kirby series

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Some more Japanese sources would be handy, where applicable.

The Kirby universe contains a multitude of enigmatic ruins, structures, and artifacts of great power, with many of these relics being found on Popstar itself. Numerous pieces of dialogue and flavor text pay reference to these objects, and hint at the groups and/or entities that may have been responsible for their existence, but which are no longer present. The following is a list of rumors of ancient civilizations in the Kirby series:

References by game

Kirby 64: The Crystal Shards

The Japanese website for Kirby 64: The Crystal Shards mentions that the ruins of Rock Star were built by an ancient civilization.^[1]

Kirby Super Star Ultra

Galacta Knight's pause screen description mentions that he was sealed away "long ago", and that he "defies time to challenge you". Later games in the series reinforce the idea that Galacta Knight is a warrior from ancient times.

Kirby Mass Attack

In Kirby Mass Attack, Daroach comments that the ruins of Sandy Canyon were built by "a great civilization that once thrived here". No further details are given.

Kirby's Return to Dream Land

As a reward for obtaining all 120 Energy Spheres, Magolor explains a little bit to Kirby about a long-lost civilization that he refers to as the "ancients". He explains that they were responsible for building the Lor Starcutter and the Master Crown, among many other relics (implied to include the Star Rod and Galactic Nova), by harnessing "an incredible power".
Pause screen descriptions for Landia and Magolor during their respective boss battles indicate that Landia was tasked with guarding the Master Crown and the Lor Starcutter since ancient times.

Kirby and the Rainbow Curse

It is explained in the figurine description for Hooplagoon that Claycia turned to "ancient blueprints" in order to construct this particular boss. She also apparently used "ancient clay" in its construction.

Kirby: Planet Robobot

The pause screen description for the Holo-Doomers references Energy Spheres, saying that they contain ancient technology.
When President Haltmann introduces Kirby to Star Dream, he explains that it was something his company had found and reactivated using knowledge from "the most advanced civilizations in the known universe". Star Dream's form after it fuses with the Access Ark greatly resembles Galactic Nova, implying that the two are related.

Kirby Star Allies

During Hyness's crazed rant, he mentions an opposing civilization that was responsible for banishing him and his people to the edge of the galaxy, and then trying to erase them from history. He follows up by stating that his people's magic was used to "overcome their science and achieve great prosperity". He also implies that at least some of the descendants of that opposing civilization are living in Dream Land.
Pause screen descriptions for Hyness and Void Termina's various forms refer to "ancient scrolls" which describe events from the distant past. One such description explains that long ago, four heroes were responsible for sealing Void Termina away using magical spears. These same spears are seen in the Jamba Heart that contains Void Termina. Another description explains that the ancients began to write scrolls about Void due to "his shining form in another dimension".

Super Kirby Clash

The final opponent in Super Kirby Clash - the Aeon Hero - is referred to as an "ancient hero". During his final battle as Aeon Hero (Dark), he is able to cause a rain of spears to fall on Team Kirby, which resemble the spears of the heart used to seal away the Jamba Heart in Kirby Star Allies.

Kirby and the Forgotten Land

Kirby and the Forgotten Land takes place in a different world filled with ruins from a lost civilization. This world features a city with a level of technology and culture roughly analogous to modern human cities. As revealed while Kirby enters Lab Discovera, the inhabitants of this world were invaded by an alien force, which began wreaking havoc on the local wildlife. The inhabitants captured the invader, codenamed it ID-F86, and began studying the specimen. They used its innate spatial teleportation ability to create planetary warp technology, and then set off to explore other planets ⁠— but not without first creating a tourist attraction out of ID-F86. 30 years after research began, a "warp-experiment incident" resulted in ID-F86 being split into two halves. The remains of ID-F86 were kept in stasis via a custom-made Eternal Capsule, while the secondary specimen, ID-F87, was never recovered. An unknown amount of time after the natives of the world left it behind, the native wildlife gradually became sapient, and eventually formed a rudimentary civilization, with Leon and Carol as their leaders. When Leon happened upon Lab Discovera and the remains of ID-F86, they possessed his soul, and Leon began assembling the Beast Pack using the lab as his home base. The Beast Pack's primary goal was to provide sustenance for ID-F86's body so that they could be freed and restored ⁠— including their lost half. Using their spatial teleportation, ID-F86 was able to open a portal from their world to Popstar in order to gain even more sustenance and bolster their numbers, kickstarting the main story.

Various objects across the world have text written on them, presumably being the language of the ancient civilization that once inhabited that world. Said text is actually ciphered English, with each character corresponding to a Latin character. There is a total of 42 characters. The only major difference featured in the ancient text is the lack of difference between uppercase and lowercase letters.

Ancient language of the civilization from Kirby and the Forgotten Land
Character	Latin equivalent	Character	Latin equivalent
	A		V
	B		W
	C		X
	D		Y
	E		Z
	F		0
	G		1
	H		2
	I		3
	J		4
	K		5
	L		6
	M		7
	N		8
	O		9
	P	File:KatFL language exclamation mark.svg	!
	Q	File:KatFL language question mark.svg	?
	R	File:KatFL language comma.svg	,
	S	File:KatFL language period.svg	.
	T	File:KatFL language semicolon.svg	;
	U	File:KatFL language apostrophe.svg	'