From the Mysterious Benedict Society book series/trilogy by Trenton Lee Stewart.
Lol I love these guys. :'D
Oh yeah, and Hertz, I hadn't read about you when I drew this so I apologize for not including you. XD
I stoled ~kittysrawr
's version of Mc.Cracken for lack of imagination and because she depicted him so well. :'D
You can see her picture of him here: [link]
It sucks because the characters I obsess over most always come out looking like they got their face stuck in a blender. :'D
And lol, read these books when you get the chance, they're marvelous. 8D