Dennis has always had a bit an ego due to his self assumed importance. This trait branches from the fact that he was designed to be the ultimate machine for understanding. His ability to understand is also what allowed him to control the void instead of fading into it along with the rest of humanity. Through his own will and intellect he had turned himself into an immortal, non-physical, construct whose sole purpose was to interpret data of all forms including the void itself. He was able to shield Scion from the effects of the void, and prevent him from being swallowed up by the senseless expanse. He knew everything that earth had been willing to put down in digital format and had it permanently saved in his mind, to reference whenever the need arises. It was with all these advantages that Dennis found himself increasingly frustrated by Scion and his inability to land a single effective hit on Skallagrim. The sword had failed to stab Skallagrim in the back leg, and he had already withdrawn it from the portal, and was preparing to bring it around to bear down on Scion with an ominous hum. The dark shield had also transformed itself into a dagger, and Skallagrim was preparing what looked to be a devastating stomp onto Scion's right foot. He knew the situation was bad, and he was going to need to act quickly if he was going to save Scion from a world of hurt.
Dennis focuses his attention and calls upon the function of the rocket boots on Scion's feet. Skallagrim intended to crunch the metal boot, and Scion's foot, but Dennis wasn't going to allow this. He turns his attention to the right boot and activates the thruster underneath, and turns it to full power. He would have liked to give Scion a heads up so that he may properly prepare, but such luxuries would have to be forgone in favor of safety. The boot would blast off the ground in an unexpected burst and force Scion own knee into his chest with a reverberating impact. Scion would be sent rocketing backwards and several feet into the air. He would eventually fly right past the 'Bass Cannon' and sail over the short wooden fence between him and the wave pool and crash into the water. Where he would lay on his back floating in the water in stunned silence.
However, Dennis' plan did not end with Scion just being safely out of harms way. As Scion lay feet from the 'Base Cannon'. Dennis through his focus into the massive box and called it to action. He noted with some satisfaction, that the song was just approaching the most appropriate point for his plan. As the words of the forgotten song sang out. Dennis activated the sonic cannon and fired at Skallagrim, the words, "Madness Reeeeeeeeeinnnsss!" Amplified as the cannon obliterates the area just before it and cracks and destroys and cracks cement the for cement as far as a hundred feet in its destructive spread. Dennis noted, as he fired, that Skallagrim was standing about fifteen feet from the front of the cannon, and would not receive the worst it could do. However, he would still be hit with forces capable of shattering normal men. If he were unharmed by this attack, then Dennis would have great concern about whether or not they stood any chance at defeating this strange and infuriating man.