|Age||Less than 300 years old|
|Relatives||Andreas Tanis (maker)|
After being banished in the 1700s by the Vampire Elder Viktor, Andreas Tanis seeks to make his life more comfortable by making trades with the Lycans, most specifically, Lucian. At some point, Tanis comes across two women, Olga and Grushenka. It is likely that they are gifted to him by Lucian. The three live together in the Monastery, engaging in bloody orgies. Despite their time together, Tanis is not sure which of them is Olga, and which is Grushenka. It is stated that Tanis likely tried to turn several women for use as consorts, most of whom died in the process.
During one of their threesomes, the monastery's alarm begins to sound, tripped by the Death Dealer Selene and her Hybrid lover, Michael Corvin. Tanis tries to have the pair killed by the Lycans gifted to him by Lucian, whom Tanis uses as guard dogs. When that fails, he sends Olga and Grushenka to kill Selene before she can reach him. Being much older and more well trained than either of Tanis's lovers, Selene kills both of them quickly. Olga's head is broken open on a wall during the short fight.
Later, Tanis disposes of the bodies of Olga and Grushenka in the Lycan lair, hoping to use their bodies as food for the Lycans that guarded the monastery.
- When Tanis dumps the bodies of Olga and Grushenka into the Lycan lair, he thinks to himself that he will miss both their company and their bodies; the latter much more than the former.
- When the first trailer for Evolution was released, many fans mistook Olga for Erika from the first film.
|Hybrids / Corvinus Strain|
|Blood Enemy Characters|
|Eternal War Characters|
|Selene - Michael Corvin - Marcus Corvinus - Alexander Corvinus - William Corvinus - Kraven - Andreas Tanis|
|Lucian - Viktor - Amelia - Helena Corvinus - Cecilia - Grushenka - Olga - Samuel - Selene's Father - Corvinus Clan - Radu - Istvan - Erika - Drago|
|Vampire - Lycan - Hybrid - Werewolf - Immortal - Human|
|Weaponry of Underworld: Evolution - Silver Bullets - Ultraviolet ammunition - Swords - Shurikens - Crossbow - Silver - Norinco Type 84 - Kimel AP-9 - Knives - Modified Beretta 92FS - Whips|
|Ördögház - William's Prison - Vampire Safe Houses - Monastery - Pier 17 - Budapest - Tavern - Warehouse - Mountain Village - Stable - Subway Station|
|Corvinus Strain - Death Dealer - Vampire Elder - Cleaners - Blood Memories - Old World Coven|
|Music - Quotes - Images - Soundtrack - Novel - Comic - Items - Score|