Do these two primate characters come from their own game

Poker Night and Poker Night 2 are not rigged.

Jake Rodkin of Telltale Games said:

It's not cheating. The game has no motivation to cheat! Why would we write cheating code into a game which is only fun when it's authentic? There's no money on the line, only unlocks which we want you to have. No cheating, I promise.

Mike Stemmie of Telltale Games also said:

Speaking as someone who waded through much more of the poker code than our lead programmer was probably comfortable with, I can say this with a nigh-absolute degree of certainty: The amount of extra work that would be required to make the the game cheat (even a little bit) would've prohibitively annoying.

And like Jake said, cheating would gain us nothing.

Mike "Winners Never Cheat" Stemmle

I feel your pain. It seems like the conversations in Poker Night 2 are not only more frequent, but far more repetitive than in the original; adding an additional character (GlaDOS) to the mix only increases the chatter.

Also, there's another unfortunate change that was made from Poker Night at the Inventory to Poker Night 2; there is no dialogue skipping during play or conversation frequency setting in the options menu. The best you can manage, sadly, is just muting the game.

Disclaimer: I uninstalled this game a short while back, so it's entirely possibly, though unlikely, that they've patched the option in. I did some searching and people are still having the same complaint everywhere, leading me to believe this is still an issue.