* Enimul is the protagonist of Animal Land Satsujin Jiken.
* Kero is a combination of the lead character from Kero Blaster and Gillian Seed from Snatcher.
* Megarock is quite obviously Mega Man/Rockman, specifically the infamous design used on the cover of the original Mega Man.
* Hiro Roderick is Roderick Hero, the protagonist of H.E.R.O on the 2600.
* Hydlit is visually based on Saitama from One Punch Man, while his name is similar to the early adventure RPG Hydlide.
* Bargain Duck appears to be Scrooge McDuck, redesigned in a more realistic manner.
* The unnamed owner of the Porque Item Shop is the "unnamed female" combined with the pig Butako, both from in Shalom: Knightmare III, .
* Ash Geen is the title character of MSX release Ashguine II.
* Sykick is a notable character (who takes up a goodly portion of the screen at all times) from Cosmic War: Psychic Soldier.
* Venum is Venom, the primary antagonist in Nemesis 2 and Nemesis 3.
* Shuhoka is the ship's doctor in JESUS: Kyoufu no Biomonster.
* Peibalusa is a reference to Pay-Valusa from Tritorn on the MSX.
* Fairylan is based on a fairy from Hydlide III, which was set in Fairyland. (It may also refer to Fairyland Saga.)
* Haja was an unnamed shopkeeper in Miracle Warriors: Seal of the Dark Lord (known as Haja no Fuin in Japan); he only appears in the MSX version.
* Mino the Bomb-Guy is a selectable character in Last Armageddon on the PC Engine and MSX.
* Aytum is a shopkeeper in the MSX version of Xanadu (not to be confused with Faxanadu).
* Korobock borrows his design from a character in Hokkaido Rensa Satsujin: Okhotsk ni Kiyu.
* Pym is Pim, the first shopkeeper in Ys 1: Ancient Ys Vanished on the MSX.
* The Porque shopkeeper is a sort of a double-reference: in the game, the pig Botuko rides about on the lead character's shoulders and provides advice.