DISCLAIMER: I do not own Harry Potter or Hellsing.
Voldemort prepared to attack again, but Alucard's hand instantly gripped Voldemort's wrist, twisting the wand from his hand and breaking his arm in the process. Voldemort fell back, horrified.
"You aren't able to best me! I am immortal! I can't die!"
Alucard smirked. "You are an idiot. There's no such thing as immortality. You are almost a monster like me, only far too pathetic, and clearly still part human. Neither man nor monster. Neither day nor night. You, Tom Riddle, are nothing. You're a piece of shit."
Voldemort stood. "I will live forever. You are a dog, while I am a god."
Alucard rapidly raised Alexander and shot Voldemort's legs off.
"A simple bullet to the head is far too good for you. If I'm a dog, then you're future dog shit."
Voldemort screamed in horror as Alucard morphed into a swirl of shadows, the head of a dog growing from the darkness and preparing to devour Voldemort.
"Aren't you going to get up? If you're immortal, prove it! Stand up and fight me! Show me your true power! You have to have more power hidden away in there! No way this is all you have! Surely you can keep fighting until death! The night's only just begun!"
Voldemort released one final scream before Alucard decided to stop taunting and devoured him.
"I can't believe they made such a big fuss over you. After all that, you even taste worthless."