The character’s backstory was at the forefront this week, as we learned more about his difficult upbringing.

You’ve always wanted to watch an episode of9-1-1focused mostly on Buck (Oliver Stark), right?

EW: How excited were you when you found out they were going to do a Buck backstory episode?

9-1-1

Jack Zeman/FOX

I don’t know if we need a Buck begins episode."

I’m excited to get my hands on it and get stuck in."

He’s like “I’ve got it.

I’ve got this idea.”

It was a really brilliant idea because it connects so many dots.

Will I get to go back and make this thing?

Because now I know the story’s there and I want to get a chance to tell it."

I did see that being thrown around a little bit.

That would have been a difficult one to play through because she’s not that much older.

Also,I love their brother/sister dynamic and wouldn’t wanna lose that.

I’d watch a spin-off about bartender Buck.The bartending one was a difficult day for me.

I really want this to have been a phase."

Then once I got it all on, I thought, “I have made a huge error.

I feel ridiculous.”

You didn’t love the puka shell necklace?

[Laughs] That was my favorite part.

The leathery tan, the hair.

Tim called me the other day and was like, “Is that a wig?”

I’m like, “Nope, that’s me.”

But I think cowboy Buck would be the one, on the ranch.

This was who I’ve always wanted to be."

So I took the cowboy hat home.

Okay, so, maybe we’ve just found a spinoff, just Buck in the wild west.

There you go:9-1-1 Wild West.

HmmLone Starmight be mad.It’s a bit close.

Oh, yeah, they have the Texas aspect.

What kind of tools can I use?"

So it was absolutely the pitch of his voice.

It’s a little bit more wide-eyed and there’s a bit more spring in his step.

to try and hide it.

The postcards Buck sends Maddie were kind of hilarious.

Was it fun to record the voiceover for those?

It’s been a couple of emotional episodes for Buck.

Are those more draining in some ways than the really physical ones?

Yeah, I mean, it’s different.

I’ve always really loved the physical aspect of our show.

It’s always been something that I love being able to throw myself into.

Where do you think Buck goes from here?

It’s the beginning of a better Buck, for sure.

His intentions are going to be from a much better, sounder place.

Anything you’re able to tease about what’s coming up for him next this season?

He’s also going to be the fun uncle for sure.

Oh, for sure.

How could he not be?

What really sets9-1-1apart is that it has this real quirkiness to it.

It’s fun, as well as being serious.

Episode six just feels like a classic, quirky episode that we all had so much fun making.

I’m really excited to see how that all comes together for all of the characters.

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