TheLeo
Fandoms
- Doctor Who (30)
- Doctor Who & Related Fandoms (19)
- ジョジョの奇妙な冒険 | JoJo no Kimyou na Bouken | JoJo's Bizarre Adventure (16)
- 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga) (13)
- Hazbin Hotel (Cartoon) (10)
- Dangan Ronpa Series (9)
- Doctor Who (1963) (7)
- Helluva Boss (Web Series) (6)
- Code Geass (5)
- New Dangan Ronpa V3: Everyone's New Semester of Killing (5)
- Doctor Who (2005) (4)
- Dangan Ronpa: Trigger Happy Havoc (4)
- 幼女戦記 | Youjo Senki | Saga of Tanya the Evil (Anime) (3)
- Doki Doki Literature Club! (Visual Novel) (3)
- 名探偵コナン | Detective Conan | Case Closed (3)
- Death Note (Anime & Manga) (3)
- Super Dangan Ronpa 2 (3)
- SPY x FAMILY (Manga) (3)
- Steven Universe (Cartoon) (3)
- モンスター娘のいる日常 | Monster Musume no Iru Nichijou (3)
- The Loud House (Cartoon) (3)
- Dangan Ronpa 3: The End of 希望ヶ峰学園 | The End of Kibougamine Gakuen | End of Hope's Peak High School (2)
- 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Manga) (2)
- かぐや様は告らせたい | Kaguya-sama wa Kokurasetai | Kaguya-sama: Love Is War (Anime) (2)
- DCU (2)
- 魔入りました! 入間くん | Mairimashita! Iruma-kun | Welcome to Demon School! Iruma-kun (Anime) (2)
- かぐや様は告らせたい | Kaguya-sama wa Kokurasetai | Kaguya Wants to be Confessed To (Manga) (2)
- DCU (Comics) (2)
- 群れなせ！シートン学園 | Murenase! Seton Gakuen | Seton Academy (Manga) (1)
- SPY x FAMILY (Anime) (1)
- Compilation of Final Fantasy VII (1)
- Magic Kaito (1)
- 幼女戦記 | Youjo Senki | Saga of Tanya the Evil (Manga) (1)
- What If...? (Cartoon 2021) (1)
- DC Super Hero Girls (Cartoon 2019) (1)
- Knights of Guinevere (GLITCH Web Series) (1)
- 逆転裁判 | Gyakuten Saiban | Ace Attorney (1)
- Wonder Woman - All Media Types (1)
- Helltaker (Video Game) (1)
- Persona 5 (1)
- Original Work (1)
- Cooking Companions (Video Game) (1)
- The Amazing Digital Circus (Web Series) (1)
- Luigi's Mansion (Video Games) (1)
- Dangan Ronpa Another Episode: Ultra Despair Girls (1)
- 群れなせ！シートン学園 | Murenase! Seton Gakuen | Seton Academy: Join the Pack! (Anime) (1)
- The Casagrandes (Cartoon) (1)
Recent works
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The Sins of a Time Lord - Part II by TheLeo
Fandoms: Doctor Who, Hazbin Hotel (Cartoon), Helluva Boss (Web Series), Doctor Who & Related Fandoms
06 Dec 2025
Tags
Summary
It's been weeks since the supposed demise of the Master, and the Hazbin Hotel is now experiencing a boost in popularity after the last Extermination...For the wrong reasons.
But as this climate of peace persists, Vox is determined to exploit the Hotel's popularity to wage war against Heaven and rule over the Afterlife...With Valentino and Velvette, of course!
Will the Doctor and the Hazbin gang manage to prevent an all-out war? What's the deal with Alastor? And...Is the Master truly dead? (It's the Master, of course, he's not dead!)TRUST US! With your Fanfiction!
Series
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The Massacre of Valnia-17 by TheLeo
Fandoms: Doctor Who, Steven Universe (Cartoon), Doctor Who (2005)
21 Nov 2025
Tags
Summary
"I tried to warn them, but they didn't listen. What a waste..."
The Gem Empire has recently colonised a new planet and renamed it "Valnia-17" as they exterminate all life on the planet. But as the last of the local sentient species, a man named Argoth, can attest, the Gems will soon find a very unpleasant surprise...
Featuring the War Doctor.
Series
- Part 18 of TheLeo Presents
- Part 6 of TheLeo's Short Trips
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[Podfic] The Massacre of Valnia-17 by TheLeo Originals (TheLeo)
Fandoms: Doctor Who, Steven Universe (Cartoon), Doctor Who (2005)
18 Nov 2025
Tags
Summary
"I tried to warn them, but they didn't listen. What a waste..."
The Gem Empire has recently colonised a new planet and renamed it "Valnia-17" as they exterminate all life on the planet. But as the last of the local sentient species, a man named Argoth, can attest, the Gems will soon find a very unpleasant surprise...
A podfic of my oneshot "The Massacre of Valnia-17", featuring the War Doctor.
- Language:
- English
- Words:
- 0
- Chapters:
- 1/1
- Hits:
- 22
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Lelouch of the Metropolis by TheLeo
Fandoms: Code Geass, DC Super Hero Girls (Cartoon 2019), DCU (Comics), DCU
08 Nov 2025
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Summary
Lelouch Vi Britannia, alias Lelouch Lamperouge, is a new student at Metropolis High School, hoping to have a fairly decent school life as he fights crime in the city as the mysterious Black Knight named Zero. However, he soon finds out that he might not be the only person with superpowers in the school and teams up with a group of aspiring heroes.
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Tales of the Whollaverse by TheLeo
Fandoms: Doctor Who, Hazbin Hotel (Cartoon), Helluva Boss (Web Series), Doctor Who & Related Fandoms
24 Oct 2025
Tags
Summary
A collection of three short stories set in the same continuity as 'The Sins of a Time Lord'.
Series
Recent series
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The Whollaverse (Doctor Who x Hellaverse) by TheLeo
Fandom: Doctor Who, Doctor Who & Related Fandoms, Doctor Who (1963), Hazbin Hotel (Cartoon), Helluva Boss (Web Series)
06 Dec 2025
Summary
Welcome to the Whollaverse! Here, you can find all the fanfics I wrote set in the same continuity as "The Sins of a Time Lord".
- Words:
- 132,891
- Works:
- 8
- Bookmarks:
- 13
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TheLeo's Short Trips by TheLeo
Fandom: Doctor Who, Doctor Who & Related Fandoms, Doctor Who (1963), Doctor Who (2005), Hazbin Hotel (Cartoon), Helluva Boss (Web Series), Steven Universe (Cartoon)
21 Nov 2025
Summary
Short stories set in several points of the Whoniverse, both canon and my own, and featuring characters from Canon Doctors and companions to OC ones.
- Words:
- 5,219
- Works:
- 6
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TheLeo Presents by TheLeo
Fandom: Dangan Ronpa - All Media Types, Dangan Ronpa 3: The End of 希望ヶ峰学園 | The End of Kibougamine Gakuen | End of Hope's Peak High School, Dangan Ronpa Another Episode: Ultra Despair Girls, Dangan Ronpa Series, Dangan Ronpa: Trigger Happy Havoc, Doctor Who, Doctor Who & Related Fandoms, Doctor Who (1963), Doctor Who (2005), Hazbin Hotel (Cartoon), Helluva Boss (Web Series), Knights of Guinevere (GLITCH Web Series), Luigi's Mansion (Video Games), New Dangan Ronpa V3: Everyone's New Semester of Killing, Steven Universe (Cartoon), Super Dangan Ronpa 2, ジョジョの奇妙な冒険 | JoJo no Kimyou na Bouken | JoJo's Bizarre Adventure, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), 名探偵コナン | Detective Conan | Case Closed
21 Nov 2025
Summary
All of my Oneshot fics made by me, TheLeo!
- Words:
- 19,655
- Works:
- 18
- Bookmarks:
- 2
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The Child Doctor Adventures by TheLeo
Fandom: Cooking Companions (Video Game), Doctor Who, Doctor Who & Related Fandoms, Knights of Guinevere (GLITCH Web Series), 名探偵コナン | Detective Conan | Case Closed
06 Oct 2025
Summary
The range of fanfics starring my OC incarnation of the Doctor, "The Child Doctor", an alternate version of the Eighth Doctor, travelling through Time and Space with a variety of companions, children who want to be Detectives, slaves from Ancient Times, chieftains of powerful tribes and (hopefully) many more in the future!
- Words:
- 48,471
- Works:
- 6
- Bookmarks:
- 3
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The Fan Fic Crossover Universe (FFCU) by TheLeo
Fandom: Code Geass, DCU, DCU (Comics), Doctor Who, Doctor Who & Related Fandoms, Doctor Who (1963), The Casagrandes (Cartoon), The Loud House (Cartoon), Wonder Woman - All Media Types
18 May 2025
- Words:
- 16,025
- Works:
- 2
- Bookmarks:
- 1
Recent bookmarks
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Summary
One shot. Doctor Sam Loomis (as played by Donald Pleasance) receives a note that re-confirms his purpose in life. Set months before Halloween 4: The Return of Michael Myers. Based in the classic Carpenter Halloween universe. comments wel;come.
Bookmarked by TheLeo
28 Aug 2023
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Summary
Frisk grew up in a home with neglectful, drug using parents. With a little sister to take care of, Frisk goes to Mt. Ebott to collect a flower specimen for a professor in town who was willing to pay three hundred dollars for it. When she falls into the Underground, she finds danger, but also family and friendship. With the help of a mysterious ghost girl named Chara who only she can see and who she shares a connection with, as well as some new friends, especially a certain pair of skeleton brothers, Frisk tries to get back home to her sister, but what will be the cost? And how far will Frisk go to protect both her sister and her new friends?
This fic now contains illustrations from my lovely friend, MissJulyFarraday on Deviantart! She's an amazing artist and writer and gave me so much inspiration for HDAD. You can find the rest of her art here: https://www.deviantart.com/missjulyfarraday
Series
- Part 6 of Hopes, Dreams, And DETERMINATION
- Language:
- English
- Words:
- 246,847
- Chapters:
- 26/26
- Collections:
- 1
- Comments:
- 1,140
- Kudos:
- 999
- Bookmarks:
- 156
- Hits:
- 42,333
Bookmarked by TheLeo
01 Aug 2023
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Summary
As a first-grader, Yoshida Ayumi had loved the cool, frigid winter and the soft snow that it brought on. But years later, that same snow she had loved earlier in life now held a very different meaning. Now, winter season reminded her too much of the cold, icy enigma that was Conan-kun.
After all, warm flames and frosty ice can never mix… it led to the beautiful snowflake melting.
Bookmarked by TheLeo
15 Jul 2023
Bookmarker's Notes
Really good story, and good material for inspiration
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Doctor Who and The Dark Page by PlumPuddingTheWriter
Fandoms: Doctor Who (2005), Doctor Who & Related Fandoms, Doctor Who (Big Finish Audio)
07 Jul 2023
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Summary
The Doctor and her companions, Danny Devito and a newly regenerated Romana find themselves trapped in a village where everyone has received a letter that says their exact date and cause of death.
Naturally, shit hits the fan.
Series
- Part 4 of NCJDDAS
Bookmarked by TheLeo
14 Jul 2023
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Doki Doki Literature Club: Protagonist Sentience by orphan_account
Fandoms: Doki Doki Literature Club! (Visual Novel)
24 Dec 2022
Tags
Summary
After seeing Sayori hanging, a distraught MC suddenly goes back in time, and he realizes he’s in a video game. He now has to work with the player, who is fighting back Monika’s corruption. Meanwhile, a groups of very interested employees work through their morality seeing this.