Rob Kardashian comes out of his shell and Snapchats with Blac Chyna and her son King Cairo

Reclusive Rob Kardashian continues to come out of his shell; now, he's even Snapchatting!

The 29-year-old reality star on Saturday was captured visiting a fall fair with his 28-year-old fiancee Blac Chyna and her son King Cairo, four.

It's a rather social change of pace for the sock entrepreneur - who fought the spotlight as much as his sisters embrace it - as he continues to be more outgoing in his relationship with the extroverted hip-hop video vixen.

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Snapchat star: The most private of the Kardashians, 29-year-old Rob, took to social media Saturday as he attended a fall fair with fiancee Blac Chyna, 28, and her son King Cairo, four

Snapchat star: The most private of the Kardashians, 29-year-old Rob, took to social media Saturday as he attended a fall fair with fiancee Blac Chyna, 28, and her son King Cairo, four

Untimely: While Rob usually wears a blue Los Angeles Dodgers baseball cap, he didn't on Saturday, even though the team is currently in the playoffs
Got your attention?: Rob's focus seems diverted off-camera

Heavy lies the crown: Rob is clearly a novice as he experiments with the floral filter on the social media site his famous sisters, particularly Kylie, have mastered 

Fire brand: Fearless, outgoing and brash, Blac Chyna has helped lure the reclusive reality star out of his shell for much of the past year 

Fire brand: Fearless, outgoing and brash, Blac Chyna has helped lure the reclusive reality star out of his shell for much of the past year 

In the series of clips posted to Chyna's account, Rob was seen milling around the event, even experimenting with the app's popular flower crown filter, as Chyna prodded him, 'You love that filter!'

Elsewhere, viewers of Chyna's Snapchat saw her fiance and her son (with ex Tyga, who's now with Rob's sister Kylie Jenner) enjoyed the activities of the fall festival they were attending.

Among the fun times was King careening down an enormous inflatable slide, as his mom could be heard shouting, 'Go King!'

Proud: Rob even posted footage of young King Cairo riding a pony to his personal account

Proud: Rob even posted footage of young King Cairo riding a pony to his personal account

Deep thought: The son of Kris Jenner and late O.J. Simpson confidante Robert Kardashian mugs for the camera in front of an inflatable bounce house 

Deep thought: The son of Kris Jenner and late O.J. Simpson confidante Robert Kardashian mugs for the camera in front of an inflatable bounce house 

Too cute: Like his parents Tyga and Blac Chyna, young King Cairo is quite outgoing, as his infectious energy was on display following a ride down an inflatable slide 

Too cute: Like his parents Tyga and Blac Chyna, young King Cairo is quite outgoing, as his infectious energy was on display following a ride down an inflatable slide 

In another sequence, the group was seen at a petting zoo at the event, with Chyna goading her husband Rob to pet the animals on hand with rows of pumpkins and rabbits darting around in the background, adding to the ambiance of the autumn festivities.

King, showing great moxie for a boy his age, not only went to pet the animals but even took a ride on a pony, staying up and not crying throughout the gauntlet of challenging activities. His proud mom took notice, cheering him on in the background, 'Go King!'

The unlikely romance for Rob and Chyna - who announced their engagement in April before revealing in May they're expecting a baby - continues to take interesting turns on display for all to see, via their reality show Rob & Chyna and their social media accounts, as well.

Parents-to-be: Rob and Chyna announced in May they're expecting a baby later this year

Parents-to-be: Rob and Chyna announced in May they're expecting a baby later this year

Last week, Chyna sent out a tweet to more than 700,000 followers with Rob's actual phone number, later saying that the move was a tactical one to drown out any of Rob's past female friends looking to digitally rekindle their romance with him.

As Rob stood right next to her, she said on a Snapchat video, 'To assure your man is not texting no b*****s, just tweet his number out.

Lil' man: King wore an adorable suit in this pic with his dad, rapper Tyga, from April of 2015
Getting ready: Rob, helping King from a Toys R' Us, is preparing to be a dad for the first time

Lots of love: Whether it's Tyga (left) or Rob, the adorable tot King is clearly loved and cared for no matter who he's with

'How's that feel Rob? How ya feel? Get your number changed, thank you,' the feisty former stripper told the kid brother of Kourtney, Kim and Khloe Kardashian.

'To all these females wanna keep texting his phone 'cause they had his number before, talking about 'You good? You and Chyna good?'

'Naw, we good. We good. We straight. All right.'

New episodes of Rob & Chyna premiere Sunday on E! at 9/8c.

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