is of me and Ralph in his car from the 80s.

But the car is, I think it's from the 60s?

It's really the first scene that I ever have with Ralph.

One of my favorite moments of season one

is getting to recap the events

of The Karate Kid one with Johnny

and getting to do that with Daniel

two seasons later was super, super cool.

Here we have Mary, showing off her scars.

Those look really, really bad, man.

How long does that take to put on?

It takes a little while actually.

I mean, not nearly as bad as Jacob's tattoo, I'm sure.

I actually have a perfectly placed freckle

on my arm, right there.

And literally, the way that my makeup artist Jamie

recreates the scars every day, is she has a dot on her ruler,

and she lines it up with my freckle,

and then she draws a little line

where each of the scars is supposed to go,

- and then we put it on every day. - That's...

But I just thought, you know, I'm not flexing here.

Don't worry, this is not my best muscles moment.

But, this is Samantha loving her scars,

because I think we should do that more, as people.

Yeah, they don't break you, they make you.

Here, we have the beloved Diesel,

everyone's favorite AD on set.

I knew that Tanner was going to do this.

Tanner, who plays Robby on the show,

dressed up in a costume and called himself "Diesel."

I hate to admit this,

but it took me longer than I'm proud of

to realize that it was not "Diesel."

He was Tanner's cousin from Australia.

So he put on this Australian accent.

He wore a literal fake beard.

He had a wig, and he got the hair department

in on the wig to help him make it look legit.

He had all this gear.

I didn't realize the actual extent of the whole backstory.

He went in-depth.

- Oh my God. - Oh, yeah, no, no.

He had a reason he was there, too.

But yeah, it was a full identity.

I honestly have no clue what this game is called,

but it's a game where you put

this piece of plastic in your mouth,

- and it like stretches out your mouth, - Oh!

and you have to try to sound out a word.

And it usually sounds like

a funny phrase or something.

And this picture is of Jacob and Mary sitting on the couch,

and Jacob is making a frightened face,

and Mary is making an "I-don't-know-what's-going-on" face.

I feel like a lot of the moments off set

tend to be some of the more fun ones,

'cause I feel like, honestly,

we don't really film with the Miyagi-Do side all that often.

- So getting to hang out with Mary - Yeah.

and Tanner and Ralph is fun sometimes.

And this was one of the funny moments that came from it.

This picture right here is just a testament to show

just how many people it takes to make a TV show.

For this one fight scene,

we had all of these people.

These are just the people who were on camera.

This isn't even the people who have to be

behind the camera to make it happen.

Literally, when they say it takes a village,

it took a village.

This is enough to populate

a small village in a rural country,

which is us and our doppelgängers.

I love how in this picture

everyone has just a clone of themselves.

It's amazing.

This is a video that was taken during season three

where we were filming the laser tag fight.

We had to do pick-ups, multiple pick-ups of this fight,

'cause there's a lot of pieces that we missed.

It was a long shoot.

Poor Khalil was so tired

he was just sleeping on one of the stunt pads.

And I don't know why, but he was sleeping

with these like vampire teeth in his mouth.

And we just shook him awake,

and he, I think, had the most just pure,

innocent, frightened look on his face.

And he's like this huge guy.

It was just fun.

It's fun messing with him.

I went to have my arm set in a cast

about three times in one day.

Why?

Okay, so in season three,

my arm kinda sorta gets broken.

- Demolished by-- - Snapped in half.

- Yeah. - Right, uh-huh.

So I need a cast,

and the only way that we could do that

was by going to an actual doctor

and getting three different casts made.

Okay, so you had to have

- a before the drawing, - Yes.

with the drawing, after the drawing's been adjusted

- type cast situation? - Yes.

That's so cool.

How long did each one take to set?

Overall, it took two, three hours?

My next photo is of one

of our prestigious stunt coordinators, Hiro Koda,

and this is where we go to train.

This is what we learn all of our choreography.

It's pretty much just an ice box.

It's just this really, really cold, portable building

with a bunch of pads on the ground.

We roll around, do jujutsu,

and I get absolutely obliterated by all the stunt guys,

but this is where a lot of the fun happens.

The last video that I have is a video

of Jacob doing a backflip.

Oh, yeah!

Shout out to one of our stuntmen, John.

Josette, who's also a stuntwoman, helped us with this day.

Mark, I think Mark.

Everyone's getting a shout-out.

- Yeah, Mark was there. - Mark, Hiro, Jahnel,

Ken Barefield, Noah Bain Garret,

Chris Schmidt, Tony Vo, all of our stuntmen.

They really helped us.

Jacob got to learn to do a backflip.

I'm getting there.

Next season, hopefully, I'll be able to do one.

I told John it's been my dream

to learn how to do a backflip.

He was like, "I'll teach you in five minutes."

And then, at the end of the five minutes,

I was able to do a backflip by myself,

which is fricking cool!

BTS, behind-the-scenes photos

and videos of Cobra Kai, seasons one, two and three.

Cobra Kai is now streaming.

Whoo!