Voice actor Daniel Kevin Harrison claims that he got his inspiration for the style of Gokudo's voice when he became verbally upset that the local pizza place did not make his favorite sandwich, Roast Beef. (In the show, Gokudo makes a remark about having a Roast Beef sandwich). Harrison also says that that is how he warms up before a recording session - complaining about his sandwich.
Based on a light novel by Usagi Nakamura.