Sometimes the writers know when something is too serious so they make it silly just rid themselves of the stress of heavy writing.
Honorable Mention
Black Butler Omake Theater
Honestly it was the only good thing to come out of season 2.
10. Rock Lee's Burning Youth from Naruto
Because Rock Lee's performance needed more hamming up, not to mention the poor stoic Neji being a comedic punching bag.
9. Nurse Witch Komugi from SoulTaker
How does a magical girl idol show spinoff from one of the most underrated horror anime of all time?
8. Adventures of the Tiny Goddesses from Ah My Goddess
Because boredom, they need to do something when Keiichi is at college so they play with the shrine's resident rat.
7. Chibi Attack On Titan from Attack On Titan
Everything from chibi school to the usual tropes associated with chibiness, doesn't escape the fact that it span off a show with brutal deaths.
6. Full Metal Panic Fumoffu from Full Metal Panic
This was better than the main series as Souseke attempts to endure school life with only his military history as guidance. Hilarity ensues.
5. Sock Puppet Theater from Noir
When ADVFilms was still around they to had a sense of humour, so they turned this classic piece of thriller into a sock puppet show.
4. SSS Conversations from Madlax
And from the same dub as Noir comes a showcase of phone conversations making fun of everything from old horror films to spy thrillers.
3. Black Lagoon Omake from Black Lagoon
They made Revy a magical girl, genderswapped the cast and turn them into younger versions of themselves just for fun.
2. SD Gundam Original from UC Gundam
I make that clear, the original and probably the oldest example, it's weird, soooo weird.
1. Lodoss Island from Record of Lodoss War
This anime is grim so lets make everyone chibi, play with chibi dragons and just generally have fun. Of all the spinoffs this is the most unexpected.
Finally we start our list going from the very back.
100. Mobile Suit Gundam
Going back to a simpler time where giant robots were everywhere, story telling in this genre changed with the arrival of Gundam. Taking the formula to a proper gray area war.
99. Nadia Secret of Blue Water
Adapting major western novels is no easy feat and Nadia keeps it authentic to the source material all the while playing up the spectacle.
98. Noir
An intriguing mystery plot revolved around two hired guns set to the backdrop of Noir Europe more than earning it's title and one of the best soundtracks to grace an anime.
97. Segua Hard Girls
I'm a pretty big Sega fan and this mini series became a no brainer for this list. The characters are adorable, the comedy is fun and it really leaves you in a good mood.
96. Astroboy
The Tezuka classic that's often considered the first proper anime series. It's story has been through multiple redesigns but always seems to stand up well, even in the modern era
