Tedesco was a secret agent, who had been trailing a dangerous gem thief Teaque, a master of diguise. Tedesco was investigating and went through many parts of the Decolore Queen. When Teaque was about to attack the heroes, after they discovered the truth, Tedesco and his Growlithe suddenly attacked him and defeated his Vanillite. Purrloin then took the stolen Eye of Liepard back and removed Teaque's disguise. Tedesco showed he was a secret agent, sent to capture Teaque, and thanked the heroes for helping in the mission.
Tedesco sent Growlithe to defeat Vanillite, who attempted to attack.