Super-Adaptoid

The Super-Adaptoid is a robot with the powers of the Avengers.

The Avengers: Earth's Mightiest Heroes tie-in comic books
When Captain America and Thor go to stop A.I.M. from stealing a Stark warehouse, the A.I.M. agents send the Adaptoid after them. At first, the Adaptoid looks like a featureless gray robot until he copies Mjolnir and takes a green color. When Hawkeye, Iron Man and Wasp arrive, the Adaptoid also copies their powers and features. The Super-Adaptoid defeats most of the Avengers save for Captain America and Thor, but Captain America finds the Super-Adaptoid's weak spot on his chest, so he has Thor call the Adaptoid's attention with lightning while Cap reaches and hits the Super-Adaptoid's weak spot.

Avengers Assemble
In this series, the Super-Adaptoid is created by Justin Hammer.