Lothar is a fictional robot in the Metabarons universe. He is presented firstly being in service of the Metabaron (the Nameless), who asks Tonto to narrate to him of his master's history. Tonto who has been served the Metabarons for decades, unlike Lothar who is relatively new in the Metabaron's ownership, tells the saga to him, being thus the main narrator of the comic book series.

Lothar is the name of a low-pressure system that resulted in a violent extratropical cyclone sweeping across Central Europe on December 26, 1999, causing major damage in France, southern Germany, and Switzerland. Wind speeds reached around 150 km/h in lower areas and more than 250 km/h on some mountains. Besides buildings and infrastructure, forests suffered major damage resulting in substantial economic loss.