Maruul
My first con I had an experience very similar to the one had in Dramacon: I saw a very big guy, with a slight beard, dressed as Sailor Moon.
That guy was at Kawaii kon too! Gah, he was mentioned in the staffer's after convention group therpy session. He chased after our Security director, who was scared very scared and ran away from him.
Also, during the same year we had this up mechanical mermaid thing that had lights on these cup things in the boob region. ...yeah...