Not much is currently known about the Baron, as the character has been shrouded in mystery thus far. He appears to be a deeply feared member of the criminal underworld, and has allied himself with other thieves such as Flynn and Lance. The Baron, however, doesn't appear to partake in actual operations on the field, and instead sends his lackeys (often headed by his right-hand man Weasel) to do his bidding. Unsurprisingly, he cannot be trusted, and has betrayed his accomplices before. He, however, is not immune to being betrayed himself, as Flynn, Lance, Angry and Red are all known to have crossed the Baron at least once.
Despite this, the Baron appears to be an extremely successful criminal, the most notable evidence of this being his hidden treasury, which is filled to the brim with countless stolen riches from over the years.
Role in the series
The Baron is first mentioned in "The Return of Strongbow" where, eight years in the past, Weasel betrays Flynn and Lance during a royal caravan robbery. As he makes off with the goods, Weasel notes that his actions were "Baron's orders". Eight years later, Lance ropes Flynn (now going by his real name, Eugene) into robbing the Baron's treasury, which they accomplish.
In "Big Brothers of Corona", the Baron sends Weasel and his goons to find and capture two young thieves who crossed him. The girls, Angry and Red, plan to steal from Corona so they may use the money to pay for travel expenses to escape the Baron's clutches. Unfortunately, Weasel finds them, though Eugene and Lance turn themselves in in exchange for the girls' freedom, knowing the Baron would much prefer the heads of his two most hated adversaries. Weasel agrees, but before he can make the delivery, he and his men are defeated by Angry and Red.