1 - 20 of 21 Works in Ultraman Cosmos
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Try to Stay at One Universe, X! by LumiNa00
Fandoms: ウルトラシリーズ | Ultra Series, ウルトラマンＸ | Ultraman X
14 Nov 2025
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Summary
Strange distortions ripple across dimensions, pulling Daichi Oozora and Ultraman X into a conflict that stretches far beyond their world. Faced with impossible battles and trials that test the very bond between host and Ultra, Daichi must decide how much he is willing to sacrifice to protect the Light.
What begins as a mission of rescue soon becomes a fight for survival, as shadows rise and allies are forged in the most unlikely places. Across broken worlds and shifting skies, Daichi and X must hold fast to each other—because if their bond breaks, so does everything.
“A clash of worlds, a test of hearts—the Light will choose.”
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【赛罗&戴拿&高斯】假日（粮食向） by ShengYueDeXuanLv
Fandoms: Ultraman - Fandom, ウルトラマンダイナ | Ultraman Dyna, ウルトラマンコスモス | Ultraman Cosmos, Ultraman Zero - Fandom
08 Nov 2025
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戴拿不知道为什么是自己在拦着高斯和赛罗做傻事。
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Infinity Crisis Addendum: Cloverfield by TomtomtheMultitasker
Fandoms: Cloverfield (2008), ウルトラマンコスモス | Ultraman Cosmos
19 Oct 2025
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(IC Spinoff) Rob Hawkins and Beth McIntyre are prepared to meet their end in the crossfire of a giant monster attack. But what happens when intervention arrives from beyond the stars?
Series
- Part 14 of Tomtom's IC Contributions
- Language:
- English
- Words:
- 1,462
- Chapters:
- 1/1
- Collections:
- 1
- Hits:
- 28
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Fire Emblem Genealogy of the Holy War: Clash of Legacies - Ultraman's Chronicle by SigurdsWife
Fandoms: ウルトラシリーズ | Ultra Series, Fire Emblem: Seisen no Keifu | Fire Emblem: Genealogy of the Holy War
25 Aug 2025
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Summary
在千万年来一直处于断断续续的沉睡的超古代战士，因为不明原因，苏醒在了泽塔奥特曼的战场之上。他遇见了仙女座的遗孤，遇见了他为之倾心的星星，遇见了许多战友与伙伴，但最重要的是他遇见了光。
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Sekuel dari "He Shouldn't Know".
Xenon dan Max kini memiliki seorang anak bernama Maxus.
Tanpa sepengetahuan mereka, musuh lama tengah mengincar Maxus untuk balas dendam.Series
- Part 2 of Ultra Affinity AU
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太想嬷高斯了 所以摸了个短篇 看到mob就知道玩的很大 如果你了解我 那你一定会被我糟糕的xp吓得吱哇乱叫
内含 轮奸，一点怀孕提及- Language:
- 中文-普通话 國語
- Words:
- 1,507
- Chapters:
- 1/1
- Kudos:
- 2
- Hits:
- 471
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Summary
They’re all working in the same place anyway, they’re bound to bump into each other at some point.
(A series of stand alone drabbles between any two random Ultras. Throw me any two random Ultras in PM!)
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He Shouldn't Know by trextyrano
Fandoms: ウルトラシリーズ | Ultra Series, ウルトラマンマックス | Ultraman Max
16 Dec 2023
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Summary
AU, TW: Abuse and Rape.
Diperlakukan kasar oleh para senior sudah menjadi makanan sehari-hari seorang Ultraman bernama Max, tapi yang paling parah adalah perlakuan yang dilakukan oleh mantan atasannya Max.
Series
- Part 8 of Trextyrano's AUs
- Part 1 of Ultra Affinity AU
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An up and coming member of the Inter-Galactic Defense Force, one Ultrawoman Valkyrie, is quickly wrapped up in a mysterious plot; However, when things go awry on her first trip to Earth, she has to use the power of. . . Monsters!?
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Hades and The Guy that Decides to Make Home in His House by kn96Archive
Fandoms: ウルトラマンオーブ | Ultraman Orb
29 May 2023
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Summary
Hades and Persephone but Hades really just wants to live in peace and Persephone has nothing but nomnoms in his head.
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- Part 9 of 基本是迪迦中心
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*OOC
*原创怪兽X高斯莫斯奥特曼
*R18注意
*触手play
【20200802】 -
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The crew of the Lost Light, in their new universe that they are exploring, are about to stumble upon some very familiar things. Meanwhile, Rodimus and Megatron try to "put right" their strained relationship after Megatron's primal regression a few months back. Some very strange and strangely familiar things are about to happen to the crew of the Lost Light, but will it be for good or for bad?
Series
- Part 22 of The Love of Romance
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Valentines Day headcanons from different characters from Ultra Series
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Holiday Special by Lotus92
Fandoms: ウルトラシリーズ | Ultra Series, Ultraman R/B (TV), Ultraman Mebius, Ultraman Saga, ウルトラマンＸ | Ultraman X, ウルトラマンジード | Ultraman Geed, ウルトラマンタイガ | Ultraman Taiga, ウルトラマンZ | Ultraman Zett
04 Jan 2022
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Collection of Headcanon and Drabbles by The Side Space Challenge 2021
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Meditation by Lotus92
Fandoms: ウルトラシリーズ | Ultra Series, ウルトラマンコスモス | Ultraman Cosmos, Ultraman Mebius
13 Aug 2021
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Cosmos invited Hikari to have a little time with him, to clear out his mind, without knowing the scientist has some deep feelings for him.
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I Would Offer It Happy With a Smile On My Face by WritingPaperGhost
Fandoms: ウルトラシリーズ | Ultra Series, Ultraman R/B (TV)
29 Sep 2020
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Summary
“So, that giant sure was something, wouldn’t you agree?”
Asahi spins around, finding herself face to face with the man from earlier. What was he still doing here? Why hadn’t he evacuated?
“I don’t suppose you know much about it, would you?”
Okay, that was a strange thing to ask. “I- I’m not sure what you mean?”
The man crossed his arms and shrugged, “You tell me.” He said, then he adjusted his glasses, “I saw you become that giant, in a flash of light. I saw the giant become you in the same manner.”
Damn it. “Are you- are you sure?” She knew he was. He seemed very serious.
And the man seemed to agree with that, “You know that.” He sighed, “Do you even know anything about what a Gomess can do?”
“Gomess?” What on Earth is a Gomess? Was it the Kaiju she just fought?
The man arched his eyebrow, “That Kaiju.” He responded, then sighed, “I think I see why you struggled to fight it. You didn’t even know what you were fighting.”
Asahi rubs the back of her head, a bit sheepish, “I really didn’t,” She sighed, “That fight was sooo not happy...”
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现在武藏的梦想已经实现了，自己也选择就这样留在他身边，所以——
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Sentient Ultra-Capsule: Cosmos by LookabitBlue
Fandoms: ウルトラシリーズ | Ultra Series, ウルトラマンコスモス | Ultraman Cosmos, ウルトラマンジード | Ultraman Geed
28 May 2020
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Ultraman Cosmos found himself awaken in an unknown place and finding out that he can't move his body, while Riku finds it abit strange that an Ultra-Capsule could talk.
(AU in which Ultraman Cosmos conciousnes are somehow stuck in an Ultra-Capsule)