The Worm-Mobile is a mobile invention of Aviva's, built for the Kratt brothers as a means of underground travel. Small and pink in color, it was modeled and designed after an earthworm. It has segments to divide its body. It was introduced in the Season 1 episode "Mystery of the Squirmy Wormy".
Background[]
The Worm-Mobile first appeared in "Mystery of the Squirmy Wormy"; Aviva had originally built it for Chris as a better means of transportation through the underground tunnels. When Martin and Pinkie were taken by an American robin back to its nest, the Worm-Mobile was damaged by another robin. Chris, with his ingenuity and quick thinking, managed to fix it and go after his brother and Pinkie.
It made its second appearance in "Tenrec Treasure Hunt". Chris placed it on an X for the rest of the Wild Kratts to find during the treasure hunt. Upon following the instructions given by Chris' messaging orb, Martin, Aviva, Koki, and Jimmy climb into the Worm-Mobile and head underground. In the tunnel system, they encounter a mole-like rice tenrec, which tries to eat the vehicle. They were able to escape by putting Jimmy's socks into the worm slime container and spraying the bad-tasting mixture into the tenrec's mouth.