Zach is the main antagonist of the Wishbone episode "Twisted Tail." He is a teenage delinquent who robs houses. He even stole a pink flamingo sculpture from the house of Wanda Gilmore. At one time, another boy named Max hangs out with him, but eventually, it turns out that Zach is the robber of the houses.

At one point, with the help of Joe, David, and Samantha, Wishbone records a video of the thief, and Samantha calls 911. After this, while chasing Wishbone out for spying, Zach is arrested for his crime.

Zach is played by Michael Edmonds.