Ultimate Proto-Bot 10000

The Ultimate Proto-Bot 10000 (Protobot or UP10K for short) is a gigantic robot antagonist who attacks the EPF mainframe in System Defender. If you beat it, you earn the Protobot Attack Stamp.

Trivia

 * The Protobot is built out of many items seen around the island. These include two speakers, two sled tubes, a mine cart and the Stage ticket booth.