Role in the series
Anthony first appeared 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".
Weasel returned in "Big Brothers of Corona"; he was sent by the Baron to capture Angry and Red for crossing him. When Eugene offers him a deal—in which Anthony frees Angry and Red in exchange for Eugene and Lance—he lets them go and send his henchmen to get Eugene and Lance. Angry and Red are able to fend off the goons and free Eugene and Lance, leaving Weasel empty-handed.
In "Beyond the Corona Walls", Weasel informs the Baron that Flynn Rider has returned to Vardaros, where the kingpin has established as his base of operation. Weasel and the other goons kidnap Rider and Strongbow in a coup to have the former marry the Baron's daughter, Stalyan. They fail due to the interference of Rapunzel. During the final battle, the Baron is bitten by his own venomous spider, forcing him and Stalyan to leave the city in search of the cure.
In "The Return of Quaid", the Weasel takes over Vardaros in the Baron's place, but his position of power is challenged by Rapunzel. The Weasel, unable to defeat the princess on his own, hires a bounty hunter to do away with her instead. Unfortunately for the Weasel, Rapunzel enlists the help of the retired Captain Quaid, who manages to defeat the Collector with help from his deputy, Vex. This forces the Weasel to leave, freeing Vardaros.
In "Max and Eugene in Peril on the High Seas", he was on a prison ship along with almost all of Rapunzel's old enemies, including Lady Caine, her crew, the Stabbington brothers, and Axel. They took control of the ship and planned to take off at the mainland, only to be thwarted by Eugene, Max, Rapunzel, and the rest of the gang.
His alias "Weasel" is from its figurative expression which means a deceitful or treacherous person, achieve something by use of cunning or deceit.