Hey, It's That Voice!: Aside from the other three characters retaining their voices, Tycho Brahe was voiced by Andrew "Kid Beyond" Chaikin, who also provided the voice for some of Telltale's past games, including the voice of Max for "Culture Shock" in Sam & Max Season One. He was also none other than the English dub voice for one Dio Brando.
What Could Have Been: There are a bunch of unused sound files in the game. Among them, evidence of a phone conversation between Strong Bad and The Cheat. Strong Bad would've been asking The Cheat how to respond to The Player bluffing. More specifically, Strong Bad would've said the following:
Hit him up on the twooo-way...get some tips to get the money go my way... Hey, da Cheat! The bozo across the table is a real bluffer. What do you reco-recommend? ... Whoa! I think we should leave his sister out of this. I don't want to start a fight and scare the other guys with my manliness. ... Oh, that's much better. Nothing convinces a man to play it straight like a reminder of the global economic crisis and the rising price of The Cheat litter. Thanks da Cheat!