You got a steady arm and a good aim. The Governor could use a man like you. Of course, the governor can't use ya' if you're dead, so you better be as good as you think you are, because Kelley over there is.
„
—Jason Cornet's pep talk to Red after the Battle Royale
The player can unlock Jason Cornet as a playable character in Showdown Mode by completing the mission "Siege" with an Excellent rating or by purchasing the Store Photo from the General Store in Brimstone any time after the mission "Freak Show". His special ability allows him to quickly empty all of his weapon bullets into an opponent, killing them.
As Governor Griffon's personal bodyguard, Jason Cornet and the rest of the Cornet Brothers guard the mansion. Out of the entire group of the Cornet brothers, Jason is Griffon's right hand and is the leader of the Cornet Brothers. Apparently, he will use any means, even of extreme cruelty to his subjects, to entertain Griffon.
Jason Cornet is the bounty reward for completing the mission "Siege", with a value of $1000, despite him not appearing in the said mission.
Events of Red Dead Revolver
Jason Cornet is seen loitering in the Brimstone Saloon right before the final day of the Battle Royale, where he is very complimentary towards Red Harlow, telling him the governor could use someone like him, but warns him of Mr. Kelley's quickness. He is also on the balcony next to Sheriff Bartlett during each of the duel introductions, along with his brother Oswald.
In the mission "House of Cards", after all of his brothers have been killed, defending Governor Griffon's Mansion, Red must duel an angry Jason Cornet at the Governor's office. After he is shot, Jason dies and falls back onto the Governor's chair and Red Harlow is finally allowed to wreak his vengeance upon the Governor.
Jason Cornet is listed in Sheriff Bartlett's Journal on pages 272 - 273 under the Protectors of Brimstone section. The pages are unlocked by unlocking his Showdown character by either of the methods noted above. He is the only one of the Cornet Brothers to have his own page and the only playable one.
Quotes
“
How about THAT?!
„
—Jason Cornet, melee attacking
“
Enough of this nickel and dime stuff! Lets kill 'em.
„
—Jason Cornet when selected in Showdown
“
I'm afraid that the Governor's otherwise occupied. Next time I suggest you would make an appointment. Only there ain't gonna BE no next time!
In the Showdown Mode, Jason uses Sheriff O'Grady's voice instead of that of one of the Cornet Brothers, who are all voiced by Casey Siemaszko. This would imply that Stephen Schnetzer originally played Casey's role of voicing Jason. However these could be beta leftovers, as Jason still has his own unique lines and winning quotes, which are different than O'Grady's.
Jason is the only antagonist that you claim reward money for and unlock in Showdown Mode before actually killing him in a mission.
He is the only character to have a unique death animation in a duel.
Despite appearing much later in the game, his purchasable object can already be bought after completing the mission "Freak Show", which is so far only the seventh chapter.
His unlocking object, the Store Photo is quite similar to his brothers' unlocking object, the Burned-Out Store photo, which would suggest that the Cornets had something to do with Ralph Clover's general store in the past.
