Should send you to a website that has a directory of all the Shounen Manga (or boys manga), for more appropriate books
battle angel alita
detective school q book cover - Google Search
lupin graphic novel - Google Search
lone wolf and cub - Google Search
fullmetal alchemist brotherhood - Google Search
Darker themes - recommended for 16+
Hikaru no go (vols. 1-8)
Amulet by Kazu Kibuishi. This is one of our most popular graphic novel series with 4th and 5th graders.
the man in the ceiling graphic novel - Google Search
Naoki Urasawa's 20th Century Boys, Vol. 2: The Prophet by Naoki Urasawa http://www.amazon.com/dp/1591169267/ref=cm_sw_r_pi_dp_KlB-vb1W3X4MK
Is Watchmen OK for your child? Read Common Sense Media's book review to help you make informed decisions.
Original Archie comics revamped for Zombie Apocolypse
DeviantArt: More Collections Like Kekkaishi - Musou by yoromichi-kun
Fairy Tail vows vengeance on Minerva of Saber Tooth when she sadistically thrashes Lucy to within an inch of her life