Darlene Wade, PhD

 is the author of the book "What the Heck Just Happened to My Body?". Her name is shown in The Ugly Truth.

Almost nothing is known about Wade, aside from the fact that she received a Doctorate of Philosophy at some point in the past and wrote a book about puberty afterward. Her book is read by Greg Heffley, who finds it disgusting enough that he throws it in the trash when given a copy by his mother. ​

Appearances
​*Diary of a Wimpy Kid: The Ugly Truth (mentioned) ​