Egg Walker

The Egg Walker is a machine used by Doctor Eggman against the newly formed alliance, during the Attack on Mobius ; using its two legs for moving backward as they pursue him, the Doctor fires multiple missiles, some of which fly upward and aim for the aerial squadron chasing him from above. From its front cannon, the Walker shoots flames at those on the ground, knocking Calvin and Hobbes backward, and the rear cannon fires electricity bolts at them, as well— one of the bolts hitting Tank during the chase, and another striking Luigi later on. In addition, a spinning drill is attached to the rear cannon for protection, though it is quickly dismantled by Knuckles, and extra projectiles are fired from the front, one of which hits Sonic and sends him flying backward. Finally, the Walker's two legs allow it to jump and spin, shaking off enemies. Eventually, however, the combined assault from the new alliance causes the Walker to fall over and explode, sending the Doctor flying through the air. However, Knuckles and Shadow get the Walker working again, and they use it to chase the Doctor along with everyone else, as he attempts to flee; then, as Calvin flies his spacecraft alongside the Eggomatic (a form of Eggmobile), the Walker fires an electricity bolt and destroys the Doctor's escape capsule. Afterward, the Walker is presumably left behind as the giant robot begins attacking the group.