Can anyone recommend a book for DS

[Titsalinabumsquash]

DS1 is a keen reader, he's ploughed through all the goosebumps books he got for Christmas and he's read all the current foray of a wimpy kid books and he's read all the Harry potters. He's 12 but younger (behaviour and emotionally) i think than his peers.
Can anyone recommend a new book series for him to try?

The Alex Rider series (Anthony Horowitz) and the Percy Jackson series (Rick Riordan) or has he already read them?

The How to Train your Dragon Books are very funny.

No we've not tried them, thanks.

David Walliams books are fun

My son, who has also read the books mentioned above, loves the 'Timmy failure' range of books and also the Jedi academy books (both have funny illustrations as in the 'wimpy kids' books and my ds finds them hilarious)
Has he read any 'skullduggery pleasant' books? They are another good bet.

Artemis Fowl?

Percy Jackson books and the others from Rick Rhiordan

Yes and David Walliams - all my dc's have enjoyed his books.

I forgot to say he's read the David Walliams books! Thanks for all the suggestions, I'll get a few for him to try out.

Middle School series is, I think, similar to Wimpy Kid.

Hendersons boys and the Cherub books. DS loved them in about Y7.

Artemis Fowl
Bartimaeus Trilogy
Virals series by Kathy Reichs

The Adventures of Jack Brenin series

The Alchemists Cat Trilogy- Robin Jarvis I think.

Mrs Frisby and the Rats of Nimh.

Charlie Higson - Young Bond series

The Mysterious Bendedict Society books by Trenton Lee Stewart are very good, and I think they are aimed at 10-12 year olds.