"1812" was a Diagnostic Repair Droid created by the Leviathan Elack. While John Crichton was aboard the Leviathan, taught it to whistle and chirp the "1812 Overture" -- after which, he painted it.

After Elack's sacrifice on the planet Arnessk, "1812" was the sole remaining component of the vessel. Crichton brought the DRD onto Moya, where it continued to act as a faithful companion to the human.

"1812"'s unique origins proved useful on occasion -- for instance, when Coreeshi bounty hunters deactivated all of Moya's DRDs, "1812" remained active.

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DRD "1812" is a character featured in the fourth season of Farscape.