God Eater Burst
Erina and her brother came from a wealthy family. Near the conclusion of the game, having overcome her brother's death, she informs the Protagonist that she wants to become a God Eater, but asks the Protagonist to keep it a secret from her father.
God Eater 2
- Mr. Vogelweid - Her father. He is unaware about his daughter's main goal of becoming a God Eater.
- Eric der Vogelweid - Her late brother. He spoiled her constantly while he was still alive.
- Emil von Strasbourg - Erina is shown to not get along well with him, her colleague in the 1st Unit. She often has to be the straight-faced one to handle Emil's dramatic antics.
- Kota Fujiki - Her superior captain at the 1st Unit.
- Protagonist (God Eater 2) - Envious of their capabilities, she, at first, develops an attitude of 'I won't lose to Blood' towards them. Eventually, though, she grows out of it, learns considerably while on missions with them, and eventually begins to call them 'senpai'.
- Protagonist (God Eater) - At first, she begrudges them and Soma for not protecting Eric, but she eventually gets over his death, trusting them to keep her enlistment as a God Eater a secret.
- Soma Schicksal - At first, she begrudges the protagonist and him for not protecting Eric, but after getting over her brother's death and becoming a God Eater in his footsteps, she goes on a mission with him and Blood 1, eventually learning that Soma isn't all that bad a person in spite of his cold exterior.
- Erina's name was first revealed in two of Eric's speech lines in God Eater Burst.
- Erina wears the same gloves as her brother did.
- In a TGS video, Erina uses an Assault Gun, but in all official releases of the game she uses a Shotgun. She shares the same gun part her brother once used, which is a blue and white variant of Type20 Gat.
- Like her brother, she has the "Wrath of Revenge" skill.
- She calls her God Arc by the nickname of Oscar which has Norse origins meaning God Spear (os=god/car=spear).
- Erina is the youngest God Eater to date arguably after Soma who has been a God Eater since the age of 12.
- Her Blood Art is Gatling Spike.
- Erina's Link Support Device increases movement speed by 20%.
- In the Final Complete Guide, a preview of Erina's information page on the famitsu website shows a typo in her codename instead calling her "elina."