Board Thread:Questions and Answers/@comment-37587452-20181202221521/@comment-32042142-20181215183944

[insert an obvious mom joke here]

More seriously, as said Perentie, the Kraken would be a great candidate since she can extend her tentacles to the point of sinking whole ship.

But it would be nothing compare to the Dragon in their primal form, but like in the case of the Kraken, it would not be her "normal" form.

There is also the Queen Slime who can expend to whole Kingdom (and it's absolutely terrifying, I hope it's some kind of hyperbole).

Another way of see thing is to use their mass instead of their weight, and it become really interessing. In the case of a mimic for example, she wouldn't weight much, even with her chest, BUT if you take her mass, then, you will have to take into account the mass of her dimension (if you consider it's part of her body), not only the 'visible weight', and depending the size of her dimension and what is in it, it can grow really really big. Even a whole normal room would hardly be more massive than a dragon in her primal form, but we know that Charybdis can swallow whole ship, so it seem it can be pretty big.

(Yep, I'm digging WAY too much into this)