Yatter-Woof is a dog-shaped mecha that is the main mecha used in Yatterman series. It's prototype was designed by Jason Lee and completed by Nat Lee.
It is fitted with a siren and a bell, similar to other rescue vehicles, and a joystick to control the other features. Its nostrils fire iron pellets, and holds two firehoses on its back. A bone-shaped power pack, known as "Mecha-Tonic", is fed to the dog robot to allow a sudden outburst of strength to ward off a deadly blow. The robot's special attack is a large group of miniature robots, usually taking the shape of land-based animals, exit the robots mouth. The mini-robots use their weapons on the enemy, causing the Doronbo's robots to explode and create a skull-shaped explosion cloud.
| Yatterman Characters | ||
| Yatterman | Gan Takada · Ai Kaminari · Omotchama · Yatter-Wan · Yatter-Pelican | |
| Doronbo Gang | Doronjo · Boyacky Butsukusa · Tonzura Sutakora · Dokurobei | |
| Minor Characters | Tokubei Takada · Hassan · Benifal · Yokubaba · Poppe · Chamberlain · King Gamehameha | |