Top 10 Best Anime Traps

Astolfo (Fate/Apocrypha)

I think it's very reasonable to assume certain things about Astolfo. During a scene in Apocrypha, when he's revealed, Jeanne reacts strongly. In the next scene, Astolfo says something like, "She knew I had one. Why was she surprised?" This leads me to think that Jeanne was taken aback for some reason.
Astolfo also weighs the same as Vegeta, and considering how muscular Vegeta is and how skinny Astolfo is... oh boy. But that's just a theory.

Type "Astolfo" into your Google search. What pops up is mesmerizing. Just typing Astolfo's name into Google will show fewer images of the real Astolfo from the original work. Instead, you're treated to a plethora of images depicting a pink-haired character. You've got to love every second of Astolfo in the Apocrypha anime.

Felix (Re:zero)

I kind of like him. Help! I'm a female.

Afuro Terumi (Inazuma Eleven)

Hideyoshi Kinoshita (Baka to Test to Shoukanjuu)

Well, I already knew he was a boy when I first watched the show. The reason why I think he is a trap is that he wears girl outfits and makes the boys' hearts race.

I know, I know. He looks like a girl, but that doesn't stop him from being the most liked!

I have a strange feeling that he is much more attractive than his sister Yuuko, Minami, and Himeji.

Chihiro Fujisaki (Danganronpa)

He tried to change himself at the end. And also, why is the Boku No Pico trio on top?

Asuramaru (Seraph of the End)

Tet (No Game No Life)

Someone once said that Tet doesn't look like a girl, but he does.

Peak character design right here. It sucks that he didn't have much screentime in the anime.

Totsuka Saika (My Teen Romantic Comedy Snafu)

Okay, so he... Yeah, he may not look like one, but he's a boy.

Nagisa Shiota (Assassination Classroom)

Nagisa Shiota is one of the students in Class 3-E, the main student protagonist, and the narrator of the anime and manga series Assassination Classroom. He is known for his calm demeanor and exceptional assassination skills. Throughout the series, he grows in confidence and plays a key role in the story's... read more

In his case, he isn't cross-dressing by choice. His psycho mother forces it on him.

He would look better if he were a girl, but he is a boy!

He's my husbando (I'm a girl, by the way). He's really cute, and I love traps to begin with. He was the first trap I fell in love with (yes, I'm a girl).

Rimuru Tempest (That Time I Got Reincarnated as a Slime)

I'm not necessarily sure if he counts since he's a genderless slime but still goes by male pronouns. It's also revealed that his human form does not have genitalia, though he was a male before his reincarnation.

?

Gasper Vladi (High School DxD)

I had the same reaction as Issei when I first saw him. I thought Gasper was just a cute little girl like Issei did, but then I got surprised when it was revealed Gasper is a boy shortly after.

?

Mikhail (The Case Study of Vanitas)

Titus Alexius (Magi: The Kingdom of Magic)

Titus Alexius (Japanese: ティトス・アレキウス, Titosu Arekiusu) is one of the secondary characters in the anime and manga series Magi, created by Shinobu Ohtaka. He serves as the Great Priest of the Reim Empire and is one of the four Magi of the current era, succeeding his creator, Scheherazade... read more

Pico (Boku No Pico)

Pico is the titular main protagonist of the controversial Japanese adult original video animation (OVA) series Boku no Pico.

He is a blonde boy who works part-time at his grandfather's bar during the summer. He is often shown swimming and has worn girls' clothing ever since Tamotsu gave some to... read more

I know, I know. I'm too young to be watching this. I'm 14. But come on, he's cute. However, yes, he is a homosexual character.

Ruka Urushibara (Steins; Gate)

I had a crush on him. Am I a lesbian?

In the series, he has two timelines: in the original one, he's a trap, and in another, he's a real girl.

Haku (Naruto)

Haku is a fictional character from the anime and manga franchise Naruto, created by Masashi Kishimoto. He is a shinobi from the Hidden Mist Village and is closely associated with Zabuza Momochi. Haku appears prominently in the Land of Waves arc, where his skills and tragic backstory are revealed.

I couldn't tell if he was a boy or a girl until he said to Naruto that he was a boy. Then I gained a long-time crush on him that I still kind of have. But Gaara is still cuter.

Marulk (Made in Abyss)

Hacka Doll No.3 (Hacka Doll)

Angel Devil (Chainsaw Man)

Rui Ninomiya (GatchaMan Crowds)

When I first saw him, I thought he was a girl!

Kirino Ranmaru (Inazuma Eleven)

Frick yeah. My brother and I almost made a bet to see if he's a boy or a girl. And I won.

Hitoshi Sugoroku (Nanbaka)

Hideri Kanzaki (Blend S)

Shouta Magatsuchi (Miss Kobayashi's Dragon Maid)

Coco (Boku No Pico)

I thought this was a girl, and I think I'm questioning my orientation because I had a crush on him before I found out he was a guy.

Kyubi (Yo-Kai Watch)

I remember first watching Yo-Kai Watch and thinking he was a girl due to his feminine voice and flamboyant appearance. But now that I know he's male, I love him even more!