Walter, also known as the "Angel of Death", is the butler of the Hellsing Estate and also does a lot of the work for the Hellsing Organization behind the scenes, including making the guns that Alucard and Seras use to kill other vampires. Even for his age, he's a very strong fighter. Most of the time when he comes to attack you, you can't even see him! Knowledge of Hellsing is most preferable for this role, since there are some things about him that I'd rather not put here just in case!

Here's a sample of what we'd like the voice to sound like: https://www.youtube.com/watch?v=kAhHRbgzluc