User blog comment:ImperiexSeed/ARCHANGEL or LEVIATHAN!/@comment-3481504-20120526012314/@comment-5619706-20160626222827

The fact that Leviathans seem so Earth-bound (they don't fly, don't have wings)

This statement is wrong on many accounts. Leviathans aren't earth-bound, It's actually quite the opposite--they were removed from everything else in creation because it was said they could destroy everything else. Also, Leviathans in their true form could fly and even land with great force, like that of a meteorite.

And on topic, Death's statements from Season 7 and 10 were not by any means mutually exclusive.