While Sasuke SARUTOBI and Saizo KIRIGAKURE are fictional, the roots of family names of Rokuro UNNO, Jinpachi NEZU and Rokuro MOCHIZUKI are the same as the family names of the Shigeno family under control of the Sanada family (for Nezu, there is a theory that Iyori ASAI, who is said to be a bereaved child of Nagamasa AZAI, was the model), and Masayasu MIYOSHI and Masakatsu MIYOSHI are said to be models of the Mishoshi brothers respectively (however, Masakatsu joined the war on the Ieyasu side).
猿飛佐助や霧隠才蔵は架空とも言われるが、海野六郎·根津甚八·望月六郎の姓のルーツは真田一族配下の滋野一党の姓と同一であり（根津に関しては、浅井長政の忘れ形見とされる浅井井頼がモデルという説もある）、また三好兄弟はそれぞれ三好政康・三好政勝がモデルと言われている（政勝は家康側として参陣していたが）。