Steamroller

The Roller is a heavy machine featured in the episode "Don't Rain on My Ed". It's one of the machines in the Construction Site. It's basically a large yellow tandem roller.

As Ed and Eddy are hurrying to The Candy Store to get free jawbreakers, they notice the roller standing on their way. Eddy uses Ed as a pole to jump over the roller, but he doesn't reach and falls into the machine's cabin. Ed breaks into it and pulls Eddy out. Unfortunately, Eddy holds up the handbrake, what makes the roller go forward. While Eddy's running away, he accidentally gets caught on a crane's hook. After he swings forward, he comes back and hits Ed. Then, they both fall in front of the roller and get ran over by it. After that, the roller just keeps going forward and not seen again anymore. It's unknown if it's still in the Construction Site or went somewhere further.