PandaChimp's skit for Otakon 2005 was set to be centered around Excel Saga, and my best buddy Icequeenkitty and I had planned on making an Excel/Hyatt duo for years. Had all the materials for it wayyy in advance and the entire thing was a cinch to make.
I'd also like to add that if I ever need to go into hiding, I'm taking this costume with me. The majority my friends didn't even recognize me at the con.