Meet9-1-1's new dispatcher Alfonso Caballero — and get a sneak peek at Noah and Maddie saving a girl

The Fox drama’s newest addition stars opposite Jennifer Love Hewitt.

Alfonso Caballero’s9-1-1debut was months in the making.

“Over the course of about a year I auditioned a bunch of different times for seven different roles.

I remember thinking, ‘Gosh, they hate me,'” the actor tells EW.

“I remember thinking, ‘That sounds a lot like me.'”

I was heavier and so that came with a lot of bullying."

That was 10 year ago, and Caballero says the past decade has been “a constant grind.”

The next few years brought work onThe Goldbergs,The Bold and the Beautiful, and now9-1-1.

“This was the best time that I think I’ve ever had on a set.

Everyone was super warm and open,” Caballero says.

9-1-1airs Mondays at 8 a.m.