“Sesame Street” will use a new character, Karli, to tackle the opioid crisis in a new online-only segment. The segment will be included in the Sesame Street in Communities project.

“Sesame Street” introduced Karli earlier this year, when the 6-year-old Muppet moved in with a foster family, according to Rolling Stone. No one knows why.

In an interview with NBC, Karli said she loved her mom very much, but that she couldn’t take good care of her because she was having a tough time.

“My mom’s been going through a tough time,” Karli says in a scene from the segment. “She has what’s called a grown-up problem. And grown-up problems need grown-ups to help fix the problem, so my mom had to go away for a little while.”

Karli will appear in the segment with 10-year-old Salia Woodbury, whose parents have both gone through the trials of addiction. The segment will be offered free to providers, parents and caregivers. It will also be designed for kids, who can sometimes be unseen victims of addiction.

“What Karli does is she helps bring to life an issue that a lot of people think of as a grown-up issue, and don’t understand the impact on young children,” Sherrie Westin, president of social impact and philanthropy of the Sesame Workshop, told Today.

According to Fox, show creators wanted to address addiction because there are 5.7 million children under the age of 7 who live in households with a parent battling substance abuse.

“There’s nothing else out there that addresses substance abuse for young, young kids from their perspective,” said Kama Einhorn, a senior content manager with Sesame Workshop. “(If) even a parent at their most vulnerable — at the worst of their struggle — can take one thing away when they watch it with their kids, then that serves the purpose.”

“Sesame Street” often introduces characters to provide help for children under difficult circumstances deal with stigmas, according to NBC. Karli was introduced earlier this year to represent children in foster care. The show also introduced Lilly in 2011 to represent children who live in poverty.

Meanwhile, Alex, who was introduced in 2013, was the first Muppet to have a dad in jail. And in 2015, the Muppets were joined by 4-year-old Julia, who has autism.