This post contains details from theseries finaleofThe CWsThe Flash.

Gustin spoke with Deadline more about filming the final episodes ofThe Flashand the legacy he hopes to have left.

DEADLINE: Have you seen the final episode yet?

The Flash

The FlashThe CW

GRANT GUSTIN:No.

Actually, I havent seen any of this season yet.

I had to get home to my baby.

The Flash

So, I saw like half of it.

But other than that, I havent seen any of this season.

I was waiting until it was done.

Were going to binge watch it soon.

I really enjoyed that episode, and I like where we leave them all.

Ive been talking a lot about his family.

What did it mean for you to reunite with all of them one last time?

GUSTIN:It was great.

I think the whole cast would say the same.

So it was really fun to bring back old friends and do it one more time.

DEADLINE: Do you remember what the last day of filming was?

GUSTIN:It was all greenscreen.

Our final day was filmed on a Saturday, actually.

And we typically finish episodes with greenscreen.

Its usually our second unit day, when the next episode is starting on the main unit.

But for this one, there was no next episode.

They had to shoot some stuff that they were inserting me into from a location from a week before.

But then I had just a lot of typical greenscreen work of me running.

That was the very, very last thing we shot, which was pretty cool.

DEADLINE: How would you describe the atmosphere on set that day?

GUSTIN:It was fun.

We had gotten a lot of the emotion out of the way the week prior.

Everyone else was wrapped on Wednesday, Thursday, and Friday.

The rest of it was just me.

It was a really short day actually.

I think all of it was like a six-hour day.

I didnt get emotional, honestly, until the last couple months since Ive been done.

Itll hit me in waves.

But I felt really good that week.

DEADLINE: The Arrowverse has spanned so many years and has such a large fanbase now.

Did you have any goals for the season?

GUSTIN:Not in that sense, necessarily.

Im not a writer, personally.

Ive come to protect my character in certain ways and will have dialogue with writers and the showrunners.

Weve had, when scripts come in, Im like Hey, can I adjust this in this way?

Can I say this?

But for the most part, I accepted what my material was for that episode.

Going into the season, I didnt really venture to expect anything specific story wise.

One scene at a time.

I just never really allowed myself to get to the big picture when it came to the show.

DEADLINE: What will you miss most about working onThe Flash?

GUSTIN:I mean, the people for sure.

The obvious and the true answer is the cast and the crew and the routine.

I mean things that become routine that you take for granted.

We were all really well taken care of.

The surprising thing Ive found is I will miss putting on the suit.

DEADLINE: What has been your favorite part about developing this character over nine seasons?

GUSTIN:I think just growing up with him.

Going in, I wanted to be perfect, which I was never going to be.

I wanted everyone to be pleased.

I got to grow up with the character.

Theres some days where it feels like one.

I get to start this next chapter with my family.