I have a male Albino hedgehog who has been with me for about 3 months already he is around 11 months old now. I call him Sonic or sometimes Gonk!
From my experience, they are one of the most charming creatures that I have ever owned. Congratulations on getting Walter!
Just feel free to ask questions. I'll bee glad to help you to the best of my abilities!
Keep us updated with Walter!