Dr. Pendanski

Series

Camp Green Lake:
Stanley Yelnats IV/Caveman • Hector Zeroni/Zero • X-Ray/Rex Washburn • Squid/Alan • Magnet/Jose • Armpit/Theodore • Zigzag/Ricky • Louise Walker/The Wardem • Mr. Sir/Marion Sevillio • Dr. Pendanski • Twitch • Barf Bag

Town of Green Lake:
Katherine "Kissin' Kate" Barlow • Sam • Trout Walker • Stanley Yelnats I • Linda Walker • Yellow Spotted Lizards

Yelnats Family:
Elya Yelnats • Sarah Yelnats • Stanley Yelnats III • Stanley Yelnats II • Stanley Yelnats I • Mrs Yelnats • Tiffany Yelnats

Mid-1800s Latvia
Mid-800s Latvia: Madame Zeroni • Morris Menke • Myra Menke • Igor Barkov

Minor characters:
Clyde Livenston • Judge Austin Gorg • Carla Morengo