The Splatoon Lore Iceberg Explained

(READ THE DESCRIPTION BEFORE ASKING QUESTIONS)
The iceberg in question:
https://twitter.com/rassicas/status/1...

y'all asked for it so i worked on this practically nonstop for 5 days to deliver.

  / rassicas   i draw stuff too :]

become a patron for early access to my future videos!
  / rassicas  

EDIT: thanks for all the kind words! for reference, despite how i may sound i am not a girl, so if you're going to refer to me in third person, please use they/them pronouns. thank you!

EDIT (again): SPLATOON 3! Also damn this is blowing up
I don't think there will be iceberg-worthy material for the new game until a while after it comes out. If I added splatoon 3 theories now, THAT would age poorly. just sayin.

Amendments to the video / answers to frequently commented comments:

The mystery of Marie's pet at 13:34 has been solved, and it turns out there's a rare piece of concept art that confirms that it's an evolved scallop! You can check out the post here. (Thank you ShinyGirafarig for sending this my way!)
https://rassicas.tumblr.com/post/6618...

Settling what the Gen in Gen 83 is short for! (20:56) A few people suggested "General" which makes sense in a military context, but I ruled this out because the messages talk about her being in training to be a combat engineer. For some reason I never thought to check what Gen 83 is in Japanese, and it's 第83期. 期 means a period of time, so yes, generation. Still cryptic as hell though!

I know Pearl is 21. I translated chunks of the second artbook too. I deliberately left her out for the sake of showing more obscure examples. Also when I've seen people question adult inklings, they generally mean ones who are old enough to be the parents of the playable Inklings.

Spanish and Catalan subtitles by Lluc Riberax -   / llucriberax  

German subtitles by Ardnin-   / ardnin_  

SOURCES
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My Haikara Walker Translations
  / 1087606696015364096  

Splatoon band member info
  / 1275606717753987072  

Graffiti interview translated by me https://rassicas.tumblr.com/post/6170...

Lotta stuff relating to OE came from this interview (Japanese)
https://www.famitsu.com/news/201807/2...
ENG summary of this interview by u/linlaowee
  / splatoon_2_1st_anniversary_interview_with_the  

some stuff came from this interview (Japanese)
https://www.famitsu.com/news/201803/0...
Summarized BY u/Nimted
  / famitsu_interview_with_splatoon_2_producer  
My translation from page 4
https://docs.google.com/document/d/1S...

What do Squid Kids Eat?
https://kotaku.com/do-squid-kids-eat-...

What "Dark Nintendo" Means, According To Splatoon's Producer
https://www.gamespot.com/articles/wha...

Interview: Hisashi Nogami on Squids, Kids, and Splatoon 2's Octo Expansion
https://www.nintendolife.com/news/201...

i may be forgetting some sources so here's my obscure lore document where i've compiled p much all the lore interviews and translations i can find. enjoy.
https://docs.google.com/document/d/1a...

0:00 Introduction
1:24 Above the Iceberg
3:36 The Tip of the Iceberg
7:01 Just beneath the Surface
11:58 Deeper Waters
18:03 Even Further
26:27 The Bottom of the Iceberg
31:59 Beneath the Iceberg
36:45 The Darkest Depths
42:18 Outro