Stepper

ステッパー

Stepper (known as Side Swipe in the English version) is a green Cybertronian Autobot. He is willing and eager, though also somewhat dim-witted. He acts without thinking, forms immediate emotional attachments to his commanders, and generally causes trouble. Convoy (Optimus Prime) believes that somewhere within him lies the potential of a fine future soldier.
Despite his childish demeanor, Stepper is apparently a capable codebreaker and manages to prove useful on several occasions by deciphering Destron (Decepticon) data.
His Micron (Mini-Con in the English version) partner is Chear (Nightbeat in the English version), who actually encourages his behavior.