C-robot

A robot sidekick created by Tanpei it can appear pretty childish in both appearance and actions but it is not always a hindrance. Its power source is the winding key protruding from its back. Its features include also a flamethrower built into its nose extendable limbs and an ability to shock others with a significant amount of voltage output. Although a robot it is seen briefly eating cream puffs in the second episode. Source: Wiki