The Fuel Rod Cannon is a weapon that first appears in Season 9 during The Sarcophagus. It is found by Washington where he attempts to use it in a fight against Sharkface. It fires explosive projectiles that bounce when contacting certain surfaces. Washington fires the cannon directly towards the feet of the Flame Soldier, but the projectile merely bounces and explodes harmlessly behind the soldier, prompting Washington to use his catchphrase and call it the worst gun ever, Of All Time.