Created by Rob Liefeld and Fabian Nicieza, Deadpool first hit the comics scene in "New Mutants" #98. Since then, his popularity has snowballed, resulting in multiple series by various writers and artists, as well as his own upcoming feature film.

Last week, in response to a fan essay about Deadpool's sexual orientation , Nicieza weighed in on the character's sexual orientation on Twitter, sparking a controversy between himself and several Deadpool fans (via Bleeding Cool).

Twitter user @kawy reached out to Nicieza, asking for the wrtier's reaction to a fan essay that provides dozens of examples of Deadpool's queerness since his creation back in 1991.

In response, Nicieza wrote, "Sorry, but anyone who writes such an extended column trying to 'prove' Deadpool's sexuality does not understand Deadpool's sexuality."

After he was subsequently called out for being dismissive, he added, "Not trying to be dismissive, but readers always want to 'make a character their own' and often that is to the exclusion of what the character might mean to other fans. I've been dogged with the DP sexuality questions for YEARS. It is a bit tiring. He is NO sex and ALL sexes. He is yours and everyone else's. So not dismissive, but rather the epitome of inclusive."

Pressed on how he views Deadpool's sexuality, he explained, "Have answered so many times. DP brain cells are in CONSTANT FLUX. He can be gay one minute, hetero the next, etc. ALL ARE VALID."

"They (nor you) understand DP brain cells in CONSTANT FLUX so he is hetero one minute, gay the next, etc. ALL ARE VALID," he added when another fan brought up current "Deadpool" scribe Gerry Duggan and former writer Gail Simone's take on the character.

Asked if Deadpool's pansexuality is a result of his cell regeneration disorder, he responded, "Not 'claiming' anything. It is HOW I CREATED HIM from the beginning.

"Funny how you don't understand the character at all regardless of his (or your) perceived sexuality," Niceiza continued. "It is why he is insane, why his memory is so flawed and why he was able to survive the cancer in his system. It is why he can like something one minute and hate it the next. It has ALWAYS been a part of the characters makeup. You're arguing with the guy who introduced the omnisexual, pansexual, heterosexual, homosexual, etc. aspects of the character!"

When someone pointed out that queer fans might find it insulting that Deadpool's sexuality is linked to his mental disorder, Nicieza replied, "I understand your fight, but you're choosing the wrong character to fight for and the wrong writer to fight with. I have spent 30 years in this business writing diverse characters and hiring diverse creators. Character has been around since 1992. He is who he has ALWAYS been and this is it. understand it and hopefully accept it or pick a better character to rally behind. I'll be fighting with you."

Adding that he'll address the issue eventually, he concluded, "Would rather let people vent. I deserve it for improperly stating things and more importantly trying to have debate about complicated character and comic book pseudo-science on twitter which thrives on simplicity."

CBR News reached out to Nicieza, who declined further comment at this time.