Rem is one of the twin maids working for Roswaal L Mathers. She tends to speak in a superficially polite manner and sometimes acts without thinking. She holds both worshipping respect and guilt toward her sister for an incident in the past; because of this, Rem tends to think of herself as inferior. (Source: Re:Zero Wiki)

Joseph Joestar is the main protagonist of the second part of JoJo's Bizarre Adventure series, Battle Tendency, and the second JoJo of the series. He also appears as a primary ally in Stardust Crusaders (Part 3) and a secondary ally in Diamond is Unbreakable (Part 4). Joseph is a natural-born Ripple user and eventual Stand user, wielding the psychic photographic Stand, Hermit Purple. An exuberant troublemaker with an exceptional talent for trickery, Joseph meets the fantastic threats approaching him throughout his life with initiative and impressive ingenuity, battling Vampires, the Pillar Men, and malevolent Stand users. Part 3: Stardust Crusaders Part 4: Diamond is Unbreakable Part 3: Stardust Crusaders Part 4: Diamond is Unbreakable Stand - Hermit Purple Joseph's Stand, Hermit Purple, manifests itself as a tangle of thorny vines, which Joseph can wield as both a weapon and a hazardous defense. Furthermore, it has been shown to conduct the Ripple, which makes Hermit Purple one of the more effective Stands against those weak to it such as Vampires. One of its special abilities is to use cameras, televisions, and other things to perform a form of fortune-telling referred to as "spirit photography." (Source: JoJo's Bizarre Encyclopedia, edited)