Adam is the third and strongest engine on Crotoonia who works at the Crotoonian Construction Company Yard as a goods engine.
Adam was the smallest strongest engine on Crotoonia. He is a useful engine, he wouldn't complain about freight work, but he can sometimes be arrogant. Adam also doesn't like to see his friends fighting against each other, and would attempt to stop it if he can.
Adam is based on the Pennsylvania Power & Light Engine No. 4094. It is one of twenty-eight geared fireless locomotives built by Heisler from 1934 to 1941, and the largest fireless locomotive produced. It is now on static display at the Railroad Museum of Pennsylvania, beautifully restored and indoors.