Last time, in Moosepie and Love in the Age of Apocalypse:

"OH DEAR." Said Robot-Samandriel

"bleurg" coughed Castiel

"Please, do shove a pie into my pie-hole" we pretended Dean said

And now… for the thrilling non-conclusion of the story:

"YOU DON'T BRING A KNIFE TO A ROCKET-LAUNCHER FIGHT" said the decidedly humble Robot-Samandriel-Canadian-Kun.

It had been several minutes of Non-Robot-Castiel and Actually-A-Robot-Samandriel staring awkwardly at each other while they thought about cool things to say. And finally it was time; time to throw down and talk crap. Time to kick butt and eat bubblegum but have no bubblegum whatsoever so you have to kick butt. Deep down, Castiel had really looked forward to this epic fight.

Castiel looked at Robot-Samandriel in a sexy and awesome way that made all the fangirls watching at home rather aroused. Then he turned to camera to speak:
"No, that's where you are wrong Mister Canada. This is no ordinary knife… This is the blade that will pierce the heavens! It's made from stainless steel with the blessings of the Judeo-Christian God himself. It was forged in God City by God and it's for sale for around 300,000 souls. 250,000 if you are an exclusive of an exclusive club. Also, I stole this from God's stash, so please don't tell hi-"

Castiel's speech was rudely interrupted by Robot-Samandriel launching a rocket right into his face. You see, despite being Canadian, Robot-Samandriel was also a robot, and robots have no sense of patience in the same way that Daleks have no concept of elegance. God was later quoted saying "THIS IS OBVIOUS."

Castiel merely got up again and dusted off his coat while laughing: "HAHAHA! You came here expecting an angel, but instead you found a mad m-"

Robot-Samandriel interrupted Castiel with another rocket to the face.

"INCORRECT", stated Robot-Samandriel, "I WAS HERE FIRST. YOU CAME HERE EXPECTING A CANADIAN, BUT INSTEAD FOUND A ROBOT-CANADIAN*."

Robot-Samandriels non-existent patience had finally run out. He launched one final rocket into Castiels face. The explosion was incredible, but amazingly enough Castiel stood up when the dust cleared. His sword was raised, that amazingly manly specimen of man had actually blocked a rocket with a sword. Robot-Samandriel, confused as he was, decided to fire a really tiny rocket, no larger than a shoe at Castiels face. That proved to be an enormous mistake as Castiel jumped up on the tiny rocket and rode it across the world while standing on top of it.

Two days later when the rocket had gone around Heaven, Castiel flew in from behind and killed Robot-Samandriel with a "Rocket Riding Robot Killing Globe Circumnavigating Face Stab" which was his special attack that he developed in a chapter that the author didn't write. It looked really awesome. Robot-Samandriels body exploded and his head flew into space, where nobody would care about it for a very long time.

Castiel finally returned back to Gods home. God was not impressed: "NICE STABBING NINCOMPOOP. YOU SPEND SO MUCH TIME KILLING HIM THAT SUPERROBOT-SAM ACTUALLY HAD TIME TO DO SOMETHING VAGUELY RELATED TO THE PLOT. HE KIDNAPPED DEAN AND STUFF."
Castiel swore loudly and inappropriatedly.

*It should be noted for historical purposes, that all Canadians are technically robots designed for furtrapping** and playing icehockey.

**It should be noted that "furtrapping" is NOT a metaphor for crossdressing furries.