User blog comment:Sky-Dragoon-Twilight/Are the Wall Titans allies or enemies?/@comment-25107612-20140702142409

Gurgatory says the right thing, the walls are rather cages (which is often hinted at), like the Berlin Wall was. It's wrong to say that the Titans are enemies, they are - I guess I can say it on the Wiki - all humans who cannot control themselves. There is no "evil" Titan in SnK but the ape (we don't know whether it's a shifter and/or the true enemy). The humans forced into Titan forms are victims, just like the people killed by them.

The question whether the Wall Titans are friends or foes seems to be meaningless, because they presumably can be controlled by the Coordinate. A Titan is a tool - like a robot - and the question is which purpose they serve. What is a fact it that the power of the central government would dramatically increase if they got hold of the Coordinate. They could try to activate the Wall Titans if they are threatened, and therefore could destroy the Walls as long as the Titans are able to break free without sunlight. That means they could easily force humanity into submission - try to kill us and all of you will die. However the question is whether the Wall Titans are shifters - looks like it - and whether the Coordiante can control them. Or they are no true shifters because they did not eat a shifter, but were created in the same way as the other Titan shifters, so they would be in a dream like state like Ymir was, possibly allowing remote control by the Coordinate.

It should be noted that the Wall Titans look similar to Berthold's, Reiner's and Annie's Titan forms, who all are from the same place. Maybe the people in the Wall Titans belong to their group? Maybe Berthold & Co want to save their friends?

If the Walls are cages, the question is who sat them up. My impression is that both the Walls and the Titans serve the same purpose - imprisoning humanity in a rather small area. The ordinary Titans are part of this prison as an external threat and force humanity to cooperate. (And prevent them from leaving.) Pixis said in the beginning that humanity fought itself in the past, but was foced to end its wars when imprisoned in the Walls due to the Titans. We know that the Walls are rather bowls, because they extend underground, and that the human civilisation is older than 2000 years. Maybe human civilisation was once much more advanced - and developed the Titans back then - but nearly destroyed itself in a huge war. In the post apocalyptic world, a central government emerged, built the Walls - into a huge crater left by the war, hence the Walls are bowls - forced what remained of humanity into them (by deliberately creating the Titans as an external threat), deleted their memories (they were deleted), and finally banned technology developement. A totalitarian regime locking humanity into forced cooperation with the perpetual Titan threat and in an early modern age state, all to prevent another World War and the death of mankind. Basically the ultimate nanny state. Reiner/Berthold/Annie could be rebels against this regime. The ape could be a shifter to and belongs to the people who originally sat that regime up. That's why he was concerned when he saw the 3DMG (it's technological progress and proved the humans learned the weak point of the Titans by research.)

So this is all a bit like North Korea - people locked up in an isolationist country fearing an external enemy. However, it's meant for a good purpose: Preventing humanity from reaching a point where it could ultimately kill itself. If this theory is true, whether the Wall Titans are good or bad is up to personal interpretation.