The Super-Adaptoid is an android empowered by shards of the Cosmic Cube (or Tesseract, as it's known in the MCU) and designed to replicate the powers of the Avengers, from Hawkeye's marksmanship ...

Though the “ Avengers Assemble ” line is not uttered in their first adventure together, the original lineup of the team establishes the mission statement that has defined the iconic catchphrase.