Kulbelbolka wrote...
Actually leaked dialogues from Leviathan DLC has some clues about how it looks. Someone from squadmates (I think it's Liara) says that she don't want to some creature with tentacles to enter Shepard's brain.
And here is more: we already saw some tall thin creature in game and I think you know who it is:

Game never tells us that Ilos Statues are representation of Innusanon race, so I think that Leviathan is look like Proto-Reaper made from this race.
That's supposed to be the Innusanon (sp?), the species that was around before the Protheans. Javik confirms this when he talks about Ilos. He says something along the lines of "Protheans built a city on top of the ruins from the previous cycle."
And if these statues were to be the leviathans then that would be the 3rd time they've been retconned. In ME1, these statues
are supposed to be Protheans. Come ME3, however, Bioware decided to change things up.
Also, if one of Shepards squadmates does indeed say that, it's quite possible Leviathan is a reaper "core" with no exterior shell and its attacks are maybe telepathic/telekinetic perhaps.