I'm definitely leaking spinal fluid. I'm pretty sure my face is hollow and I can't remember how to smile. I can't feel pain anymore. Or joy. You've crushed both my spirits and my jaw structure. Why did the Walls grant you dinosaur strength? It feels like I just got smacked by a freight train made of hate. A hate train. I will never love again. Or walk. This must be what animals feel like when they're going extinct.
Oblivious to Love: Eren here is even worse than canon considering the fact that this version of Mikasa is far more straightforward about her feelings. Eren fails to notice Mikasa's obvious attraction to him. Such as when Mikasa asked him to kiss her for luck before going to battle, or when she states to him she will love him forever after she saves him from Ascot Man. And all the funnier considering He realized that Jean hates him because he is attracted to Mikasa.
Adaptational Villainy: Shardis, who's undergone a bit of this himself, describes Armin as "the ultimate culmination of human sin", and further saying that he considers Armin the most terrifying creature he's ever met.
Admiring the Abomination: He quickly develops a huge crush on the Female Titan after she kills several soldiers and spares his life.
Even Evil Has Loved Ones: Horrible person though he is, he sincerely loves Eren and Mikasa, and intends to bestow them each with a kingdom once the world is his.
Evil Genius: He's still quite intelligent (at least compared to everyone else) But just look at the other tropes here.
Evil Sounds Deep: Not normally; he's usually got a very high pitched voice. But when he starts ranting at The Female Titan in Episode 17, his voice distorts and becomes far deeper than normal as he descends into one of his most evil moments thus far.
His contest with Kitz to decide who is the "most fucked up person on the planet."
The Titans are also in the way of Armin's ambitions.
Expansion Pack Past: So far he's revealed extensive experimentation with auto-erotic asphyxiation, a desire to go to med school to become an abortion doctor, and having a promising future in fashion design until he was told that you couldn't wear people as suits.
Eye Scream: Doesn't suffer it himself, but he has "an unhealthy obsession with ocular trauma."
Freudian Excuse: He credits his Abusive Parents sending him to a "Pray Away the Gay" camp when he was five as making him "the success story I am today!"
Safe, Sane, and Consensual: The sane part may be a stretch, but she fantasizes about the Rogue Titan bending her over and spanking her with her own scarf. We're not entirely sure how that works with the size difference.