A woman who rode the notorious X2 rollercoaster at Six Flags Magic Mountain has been left on a ventilator for months after suffering brain damage on the ride, a lawsuit claims. 

Naomi Greer-Wilkinson, 25, collapsed after riding the rollercoaster in California in July, and has remained in a coma with a severe traumatic brain injury ever since. 

She is one of over 100 people who have come forward claiming they suffered severe brain injuries on the ride in recent months, according to Dordick Law, which has filed a series of lawsuits against Six Flags. 

Attorney Gary Dordick said at a press conference this week that the Magic Mountain location 'has known about the dangers of this ride for years,' as thrill-seekers allege they have been left with brain injuries from the attraction. 

Greer-Wilkinson's parents said their daughter 'still hasn't come home' months after she rode the rollercoaster in July, and she remains unable to breathe on her own without a ventilator. 

Six days before Greer-Wilkinson was allegedly injured by the ride, California mother Pamela Guillen was also allegedly left with severe brain damage at the attraction while celebrating her daughter's 16th birthday. 

Guillen said the X2 was her family's final ride of the day, but after exiting the attraction she felt 'confused and disoriented,' she told ABC7. 

She said her next memory was waking up in hospital two weeks later, and was told by her family she had undergone emergency brain surgery after collapsing. 

'I remember seeing the fear in my daughter's eyes and how scared she was,' Guillen said. 

'I had suffered a traumatic brain injury and needed emergency brain surgery to stop the bleeding and had to be intubated. I was in a coma. I spent almost a month at the hospital.' 

Her daughter, Camille Marquez, added: 'We got off the cart and we saw my mom. She looked lifeless. Not a thought behind her eyes, nothing.

'She had a brain bleed. My mom had a really bad brain bleed.'

After an ambulance brought Guillen from Six Flags to the hospital, surgeons were able to save her life by removing part of her skull to relieve pressure, CNN reports. Guillen had to relearn how to walk and talk during her recovery around two weeks after.

Guillen said that she still has 'headaches every day [and] fatigues after doing simple things.'

'Sometimes I just feel really down because I am not me anymore,' she told the broadcaster.

But while Guillen has been able to return home, Greer-Wilkinson remains in hospital on a ventilator, her family says. 

Her father, Joshua Wilkinson, told CNN: 'The jarring had damaged part of her brain and it had begun to bleed.'

Doctors were able to save her life with an emergency brain surgery.

Her mother, Artemis Greer, said: 'I do remember one of the surgeons storming through the ER and yelling: "How many is it this month? They've got to shut that ride down!" He was furious.'

'Naomi should have never, ever in a million years, even had the option to get on that ride. It's absolutely insane,' she said. 

The X2 is known for hitting speeds of nearly 80 miles an hour while flipping seats 360 degrees as it makes its way around the track, and it is billed as the world's first fourth-dimension rollercoaster.

It is widely regarded as one of the most intense roller coasters in the world, and there are only two more of its kind, in China and in Japan. 

Another plaintiff, attorney Michael Wick, says he rode the X2 on a family day out, but claims his injuries were so severe he is now unable to practice law because of his disability. 

Wick says he underwent two brain surgeries after riding the X2, as he joined a growing number of thrill-seekers who were allegedly injured by the rollercoaster. 

Dordick said at a press conference that he plans to file additional lawsuits against Magic Mountain, accusing the attraction of 'thinking it's ok that if people voluntarily choose to ride a roller coaster, then they've assumed the risk.'

'They don't assume a risk of death or catastrophic brain damage for some family fun,' Dordick said. 

Following Dordick's announcement of lawsuits, Six Flags said in a statement to ABC7: 'The ride remains closed at this time. It has been closed since the evening of July 12. It is our policy not to comment on pending litigation.'

The X2 ride has been linked to more than a dozen reports of injuries and hospitalizations in the past two decades, according to medical reports seen by CNN.

A 22-year-old college graduate, Christopher Hawley, died about ten hours after getting off the ride with his brother and cousin in 2022, the outlet said.

A coroner's report found he suffered blunt head trauma during a 'park ride accident,' CNN reported.

His father, William Hawley, told Fox 11 that a surgeon said the X2 'hit his head so hard that it had basically ruptured his brain.'

Attorneys for Hawley's parents filed a wrongful death lawsuit against park operator Magic Mountain LLC and replacement coaster train supplier S&S Worldwide Inc.

Last month, the Hawley family reached a settlement with Magic Mountain LLC and an accord with S&S, the terms of which remain undisclosed.