Egg-Tortoise

The Egg-Tortoise was a mech used by Dr. Eggman following the escape from his padded cell after he went insane and the Eggman Empire was usurped by Snively and the Iron Queen. He then used it to break out of the Eggdome, scare away the opposing Dark Egg Legion and Yagyu Clan and then went off to finish off Sonic. The Egg-Tortoise was heavily armed with missiles, lasers and a powerful beak able to uproot large trees, but was easily disabled when Tails managed to sneak under it, (as Eggman's attention was focused solely on Sonic and didn't even notice Tails), and short out the mech via an access panel on the bottom. (StH: #205)