 The character designs were created by Kazuma Kaneko . In keeping with the " MegaTen Detective " theme , Kaneko emulated the genre 's hard @-@ boiled elements in his character designs . Kuzunoha 's character design was inspired by the first animated version of Japanese character Lupin III , the main protagonists of Tantei Monogatari and Ace Ventura : Pet Detective , and the titular character from The Adventures of Ford Fairlane . Rei <unk> , who Kaneko later referred to as his favorite female character design , was created to be the main character 's sidekick and consequently was portrayed as a strong character . Her appearance was influenced by Japanese model Kitaura Tomoe . Her choker necklace , which was hung with coins needed to cross the <unk> River after death , was part of how Kaneko expressed the story 's hard @-@ boiled elements . The character Sid Davis was created as Ito wanted a black character in the game : the star mark on his forehead represented a pentagram , which resulted in him getting the production nickname " shooting star " . The name of true antagonist Inaruna was influenced by Sumerian mythology . She was originally going to be Princess <unk> , the legendary daughter of Taira no Masakado : while the explicit details were changed , Inaruna 's character was still influenced by the tales surrounding <unk> . Her reincarnation in the form of Kumiko was a conscious reference to the Megami Tensei series ' titular concept of reincarnation . Kumiko 's early portrayal was far gentler than she was in the final game : given a high @-@ class background , she would come across as a Yamato <unk> . Supporting character Dr. Victor was based on the titular protagonist of Mary Shelley 's novel Frankenstein . Future character designer Shigenori Soejima worked on the game a sprite designer . Devil Summoner would be his very first work within the Megami Tensei franchise . 
