Cecil Warner[online] is one of the Whirley Street Kids, he is named in the online book. He is the sole kid that makes the monkey noises when the bus comes by. However in The Last Straw, along with him other kids also make Monkey Noises. He was inside the bus.
- Diary of a Wimpy Kid Online (First and named appearance)
- Diary of a Wimpy Kid: The Last Straw (Unnamed appearance, first book appearance)
- He was unnamed in the book version.
- And in The Last Straw other kids also make Monkey Noises.
- He shares his name with Uncle Cecil, relative of Greg.