Based on the available sources detailing *Gyakuten! Ippatsuman*, no character named "Ichi" is referenced. These sources comprehensively list protagonists like Sokkyu Gou/Ippatsuman, supporting characters including Ran Houmu, Harubou, and 2-3, antagonists such as the Clean Evil Trio (Mun Mun, Kosuinen, Kyokanchin), and secondary figures among the Skull Lease employees. Extensive searches across episode guides, character biographies, voice actor credits, and spin-off media appearances yield no mention of this specific name. Consequently, no details regarding "Ichi's" role, background, or development can be established from the documented information.