Hiro and his friends successfully stopped Callaghan from causing major damage with his portal out of his desire for revenge against Alistair Krei for what happened to his daughter, Abigail, through the same thing. However, it turns out she's alive, not dead as Callaghan thought. His actions resulted in him going to jail, never allowed to see her ever again.

"At least you did the right thing this time," Stain told Hiro, along with his friends present in the rooftop. "But not without the prices to pay."

"Hero Killer..." the young boy could only stare at him, and they know not to pick a fight with him, despite the fact that he's a villain.

"I watched the entire battle. You're free; I have no intention to go after you anymore since you have proven yourself to be a true hero. Following your brother's example and all, that's nice. I feel bad about what happened Baymax, but I'm sure you can bring him back. Farewell, child, and I hope to see you again in my just society."

After giving his words of wisdom to Hiro, the Hero Killer left town afterwards, never to be heard again here.