The Them have more akin to members of the Ankh Morpork City Watch than any actual 11 year olds but since actual 11 yo`s are faintly annoying and the conversations Fred and Nobby have while hiding in doorways from the rain, or work, are my favourite things to read this is not a criticism.
The rest of the cast are wonderful and slightly crazy. I love the relationship between Aziraphale and Crowley.
This is essentially a story about how we're all both good and bad and it's our choices that matter but it's hilarious and wonderful and has all the best of Pratchett mixed with the things made of maggots that live in Gaiman`s imagination and give me nightmares!