According to Variety, James Gunn (Superman) explains why the episode of Max’s Creature Commandos is the saddest thing he has ever written. In a recent episode, the series detailed the life of a Weasel, a human or human-like animal that can’t communicate or isn’t all there mentally. In the episode titled “Chasing Squirrels,” the series gives more information on the character that originally stared in Gunn’s The Suicide Squad and gets very gloomy. *Spoilers ahead*

“I didn’t know the specifics of it, but I always knew that it wasn’t fair,” Gunn says.

Gunn continued, “I get really sad talking about it, his voice growing uncharacteristically quiet. “I remember finishing writing it. I was in Colorado with my wife, and I remember I said, ‘I think I just wrote the saddest thing that I’ve ever written in my entire life.’”

As per Variety, Weasel’s backstory starts when he emerges from the woods behind an elementary school. Although where he originated from is still a mystery he approaches the children who don’t see him as a threat. While Weasel and the children are having fun they are seen by an old man who sees Weasel as harmful to the kids and goes to grab his shotgun and calls 911. Through a bunch of mistakes that happen at once, a fire is started in the boiler room of the school and when the old man appears to fire his weapon at Weasel the boiler explodes killing everyone but Weasel and one girl. Weasel is seen by the police surrounded by a bunch of dead bodies and they start to fire on him before incapacitating him.

Sean Gunn (I Am Mortal) who played Weasel in the live-action and voices him in Creature Commandos said, “It is incredibly sad. James himself is has a darkness, and there’s a darkness to a lot of his work.”

“You’ll see everything with his backstory come into play in the later episodes,” Gunn teases. “If you talk about the characters existing on some sort of continuum from good to bad, he’s pretty much on the good side.”

Creature Commandos is available to stream on Max.