Hm, what day will you probably be wearing the Tatsumi costume? I've been debating whether to wear a costume and which one if so, and I'm leaning toward Teshimine from GetBackers as the most likely (if not by much) to be recognized without his other half, but Hisoka is even less hassle to wear than Teshimine. (And I have Riko! Everyone needs a cactus plushie wearing a sombrero.)

...although Hisoka probably needs new jeans, since I might not fit into his old ones. -.-