2) It is interesting to note that the Japanese title of Castlevania Portrait of Ruin uses English language for its subtitle. Nevertheless, the term "Gallery of Labyrinth" is not retained in North American, European and Australian versions.
3) The game feature of switching between Jonathan and Charlotte was inspired from its predecessor, Castlevania Dawn of Sorrow. In Julius Mode, the players has a freedom to switch characters among Julius Belmont, Yoko Belnades and Alucard.
4) Castlevania Portrait of Ruins is a direct sequel to Castlevania Bloodlines. The latter is a classic Castlevania game released in 1994 for Sega Genesis console.
5) Jonathan's father, John Morris, is one of the main protagonist in Castlevania Bloodlines. At the dawn of World War I, he and Eric Lecarde fought Dracula that cost his life in the long run.
6) Did you know that John Morris is called Johnny Morris in the Japanese version of Castlevania Bloodlines?
7) According to the official timeline, the events in Castlevania Portrait of Ruin takes place 27 years after the events in Castlevania Bloodlines.
8) Did you know that Jonathan's grandfather is named Quincy Morris? He is probably named after the main protagonist of Bram Stoker's Dracula.
9) Quincy Morris successfully defeated Dracula in the year 1897, but he lost his life in the final battle too.
10) Charlotte Aulin is a descendant of the Fernandez clan. A lineage of witches that helped the church to vanquish the creatures of darkness. They are famous for their magic abilities that aided the Belmont clan countless of times during the course of centuries.
11) The Fernandez clan is not to be confused with the Belnades clan, since both names are one and the same. It's just a matter of translation that gave different names for the same family lineage.
12) The first mentioned Belnades in the original Castlevania series is Sypha Belnades. She is the wife of Trevor Belmont who fought alongside with him in Castlevania III: Dracula's Curse.
13) Did you know that there is a Belmont who shares the blood of the Belnades clan, thus making him a prodigy among his relatives? He is Juste Belmont, the main protagonist of Castlevania Harmony of Dissonance.
14) Among the characters in Castlevania Portrait of Ruin, only Brauner did not treat Charlotte Aulin as a child.
