Padlock (Energon)

Padlock is an Autobot from the Energon portion of the Unicron Trilogy continuity family.

Padlock may well be the most useless autobot ever.

Fiction

Animated continuity

Padlock was a security guard on Cybertron, alongside Wing Dagger. He was aerated by Shockblast, which set Wing Dagger on a quest to avenge him.

From Teletraan I: The Transformers Wiki, a Wikia wiki.