Martin, the level 117000 Atlantean, is certainly a meme. But is he cannon? To be honest i kind of don’t know whether or not he could be. Considering cursebeard and the other unknowns are said to be over level 1mil (iirc), it doesn’t seem out of the question something like Martin could exist in the dark sea. And I assume most of the enemies in the game are canon, considering how some of them have to be fought for story.
If he is he better be on mimhere island canonically too.
Martin’s canon in the Arcane Yonder at least 
Vetex better add a leviathen boss to the Epicenter and name him Martin
better yet, make him super weak at first but when you kill him he enters phase two and turns into a massive dragon
he is not (it was a glitch)
I mean it’s possible.
If a shark can sit in the war seas and absorb magic pollution until it turns into White Eyes, then an atlantean can sit in the most polluted section of the dark sea (far reaches, maybe even mimhere island) and absorb magic pollution until it becomes Martin.
stop being a hater he’s real
he’s real but not cannnon
he’s canon i asked Vetex and he released a picture on Patreon that shows a bossfight against a Leviatlantean named Martin
his full title is…
Martin
Supreme Leviatlantean
Forever cannon 
Little is known of the eldritch horrors that resides within the obsidian desert we title “The Epicenter”, whatever level it may be, I beg of thee vetex… Bestow upon the most ancient and powerful of these unholy beasts the title of “M̷̨̛͔̥̝̙̟͇̬̬̝͚͌̔̈́̽̉͝ ̶͚̘̠̬̆̆͌̈́̒̔̎͐̕̚͝A̶̞̳̜̪̮̖̞̔̎̽̏̒͜͝ͅ ̴̡̧̧̥͓̮̻̩͈͎͍̜̩̫̽̑̈́̓́̇̈̏̿͂͛͐̋̚͝ͅŖ̸̯̣̜̞̝̤̫͂͆̓̈̀͂̌̆͂̆̀̾͊̅͠T̷̢̰̞̳͕̻̫̦͙̤̔̐͗̅͗̽͜͝ͅ ̴̨̛̱̠͚̩͎̘̖̺̓́̃I̴̧͔͕̘̘̘̪͔̽̈́̊̀̍͝ ̴͓̹͔̬͔̺̓̈́̅̉̒̕N̴̢͓̰̱͚̓̏̿̍̐̈́̓̓̓̀͐̔̑̈.̷̡͙̻̟͑͂̾̎̊”
fake
real