Evgeny Rebic is an old Russian man Claire Redfield and Moira Burton meet on the island they are trapped on in Resident Evil: Revelations 2.
He is a miner who is not happy that they are potentially alerting the afflicted to his hideout; Moira ends up doing this by mistake while later spending time with him after her near death experience that resulted in her being away from Claire for 6 months. Although Evgeny is just a bit part character in the main game, he is the co-op partner of Moira in "The Struggle" bonus episode, and uses a rifle to shoot wild animals (for food) and kill enemies.
He rescued Moira beneath all the debris that fell on her, but does not call her by that name afterwards, and he teaches her to hunt for herself, while they are putting up with one another's whining. He later learns his missing daughter named Irina is already dead and feeling unwell, Evgeny chooses to die in the underground, with Evgeny and Moira revealing their names to each other just before he passes. His body is eventually found by Barry Burton and Natalia Korda.