土方歳三
Gintama character "Sasaki" Tetsunosuke is loosely based on him, being a new Shinsengumi recruit and assistant to Hijikata Toshi"rō" (based on Hijikata Toshizō), but also as a younger brother to Sasaki "I"saburō (based on Mimawarigumi member Sasaki Tadasaburō, presumed to be the one who orquestrated the assassination of Sakamoto Ryōma, which is also present in the series as Sakamoto "Tatsu"ma).