April's twin sister, June, made her a vampire somewhat recently before the events of DARK. Unlike her sister, she is friendly and quite talkative.
Other than fulfilling the typical expectations of a bartender, she also provides Eric with information (and, of course, drinks), initially regarding vampires and the Harding Museum, where he must seek out the Director in order to consume his blood.
Behind the ScenesEdit
Like several other aspects of the game, April and June are references to White Wolf's Vampire: The Masquerade - Bloodlines PC game. Specifically, they are said to be the younger sisters of Jeanette and Therese Voerman, vampire 'twins' who run the nightclub 'Asylum' in Santa Monica, Los Angeles.