cee⋆𐙚₊˚⊹

First, I see a lot of people on here saying that his titan doesn’t have any ears so he doesn’t hear the screams of his victims. Personally, I’ve never seen any evidence to actually substantiate this — I also don’t think that this would be very in-character for Armin. A primary feature of his development between the s3-s4 ts was that he became really almost consumed by guilt, including guilt for what he had to do in Liberio, so it makes more sense that he would force himself to hear every scream as a form of punishment. Armin definitely does not censor himself from any of the suffering he causes — in a way he’d probably think he deserves to be tormented by what he’s done.

Whew! Anyways, now that that is settled. Take a look at his titan:

As @1ceb3rg pointed out in a recent post, his titan largely resembles a skeleton!! Armin’s titan powers are inherently linked to death, given the way he acquired them (and the sacrifices other people had to make in order for Armin to live). And the skeleton is…well, it’s a universal symbol of death. Also worth pointing out here that armin figured out how to defeat the colossal through its bones — the muscles burn up in the steam but the bones don’t. His titan has much less muscle mass than bertolt’s, because that’s what killed him in the first place.

But let’s talk about his face.

His titan has no ears, no nose, and big sunken blue eyes. A skeleton also has no ears or nose.

There’s probably another reason his titan doesn’t have a nose, though. Think about Armin’s cute rosy button nose in human form. I don’t know exactly what interview it was but Isayama wrote that he “gave Armin a round nose to make him seem mild-mannered and weak while also giving him some kind of unique trait.” In other words, Armin’s nose is a physical representation of his weakness. By designing his titan without a nose, Isayama’s trying to convey that Armin is both physically no longer as fragile as he used to be and has psychologically toughened his resolve. After he was forced to strategize and think on his feet as he was in Shinganshina, Armin lived, ultimately, by developing that mental strength. He would not — he could not — give up. In season four, we really see this development in his tenacity , strategic thinking and leadership. His titan’s lack of a button nose signals this character development. He’s no longer mild-mannered or weak.

Oh! Another feature about his face is the sunken features. Doesn’t Armin look just sad? His large eyes, typically a distinguishing feature of his character, are ... lackluster at best. They’re small, sunken in and downturn. They’re a gray-blue, not his typical royal blue (or hazel, depending on who you ask). His wonder, his curiosity, has faded. He no longer has to speculate as to how Bertolt felt all those years ago in Shiganshina.

As to Armin’s character looking “sad,” we know that Armin’s first real experience with his titan powers was his dream while he was unconscious after transforming and eating Bert. This is what he sees:

Half of the colossal titan is crying. The other half is a skull — with a completely different bone structure. And no nose.

One, this reinforces/confirms the idea that the colossal titan is based on the skeleton and connected to death. But more importantly, it shows us the titan expressing deep sadness. It’s crying, from a sunken, grey-blue eye. If, in that moment, Armin’s titan was being formed in the Paths — he had just gotten the colossal, after all — then it’s possible that experience was emblematic of the shaping and reforming of the previous colossal to the next holder. Armin’s titan appears sad because he was literally crying as it was being formed.