Hiro Syndrome 

When a totally awesome male character in a book or show starts acting very asshole-ish because of a girl or woman.

"You're just being a jerk because of that stupid Haruhi."
"What, do I look like I have Hiro Syndrome?"

Hiro Syndrome by QUACK*QUACK November 18, 2009

Hiro Syndrome 

When a nearly-flawless male character in any form of media (usually a well-liked character or even the fanbase favorite) has a sudden change in personality as a result of a relationship with a female character. This change in personality is "a turn for the worse," making the character unwelcome in the media, and often unliked by the majority of fans.

"I don't get it! Hiro's acting like such a dick just because of that bitch Ayaka!"
"Oh, it's because of Hiro Syndrome."

Hiro Syndrome by TRAW!!! November 20, 2009

Hiro and Ando 

1.Two random Japanese guys who always hang out together a lot.
2.Any two random Asian guys hanging out together a lot (for people who lack the skills to distinguish Japanese from other Asians). A very small version of the "Asian mafia" found in many schools.

Hey look, there's Hiro and Ando.

Hiro and Ando by HavenB September 26, 2007

hiro protagonist 

A cheap hack that takes clever shit from cool books and claims them as his own.

That hiro protagonist on Urbandictionary.com is a fuckin' chump. I wish he could come up w/ some of his own damn material.

hiro protagonist by Raven... get it? March 27, 2004

hiro protagonist 

it's me.

Last of the freelance hackers
Greatest sword fighter in the world
Stringer, Central Intel. Corp
(Specializing in -Movies
-Music
-Microcode)

hiro protagonist by hiro protagonist December 28, 2003

Hiro Koh Yi Hong 

He is most definitely a dumb guy. He swears a lot and drinks coffee. His family is very poor and he will soon live with the fucking rat in the side of his old school building. If you have this name, I have no fucking hope for you. Your career will be very shit. Change your name.

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Hiro Koh Yi Hong by Jacob Hiroshima March 29, 2022

Hiro Adachi 

Ass Kicker extreme

Ma prend oba deya.

Hiro Adachi by Anonymous March 31, 2003