This is what happens when you doodle a thing, and then you post it on Facebook, and then a friend there asks to inflate a squid because of there being an inflated tentacle there (though I'm not sure if he was joking there), and since you relate to Splatoon too much, you just gotta inflate the squid version of an inkling.

Yeah, all of those requirements were met, so that's the end result of all this.

Reason why this happened? I dunno, broken krackon power-up? I'm not too sure. Let's just splat it before it ruins our progress!