User blog comment:Immolator1001/Reaper design/@comment-4558124-20120501214145

They didn't design themselves after cuttlefish - they just happen to have a shape that vaguely looks like one. Honestly, other than the Capital Ships, the other Reaper subtypes don't really resemble cephalopods very much at all.

Besides, what's so inefficient about their design? They seem pretty good at flying, walking, and blowing stuff up, which is already a lot to ask of a machine up to two kilometers long