Dr. Maniac vs. Robby Schwartz: Goosebumps HorrorLand (Book 5)

Robby creates comic strips on his computer. His favorite creation is Dr. Maniac, weird and wicked supervillan. Dr. Maniac isn't a real doctor, but he sure is a maniac! And now Dr. Maniac is on the loose in the real world! Meanwhile, seven ordinary kids are now trapped in the popular theme park called HorrorLand. Can Robby survive long enough to find a save them? A hairy situation awaits in Werewolf Village.