|Place of birth:||England|
|Date of death:||1939|
|Place of death:||Paris, France|
Prof. Tremayne is most likely a father figure for Rayne and one of the few humans she cares for.
Tremayne took Rayne in after the deaths of her family and raised her as his own daughter. In a flashback, Tremayne is shown having been severely beaten by Kagan, and having his own small intestine around his neck. After Kagan finds the Vesper Shard, he speculates that Tremayne and the Brimstone Society truly knew of the power of the Vesper Shards (ex. the sun gun) and were planning to use it on all people who have Vampire blood, including Rayne. Tremayne pulls out a detonator, gives Rayne time to run and dies in the explosion, along with the Nazis and Kagan (supposedly). In an FMV with Rayne talking to Severin, she reveals that if Professor Tremayne didn't get to Rayne, she would have most likely turned out to be like the rest of Kagan's children. He may have been Knighted in England, judging by Rayne referring to him as "Sir Tremayne".
|Báthory Mengele · Beliar · Collaborators · D. Mauler · Daddy · Daemites · Diseased · Elite Soldiers · Feral Vampire · G. Gosler · Giant Bat · Gorham · Hedrox the Infinite · Jean Sigmon · Jürgen Wulf · Kazi · Kommando · Maraisreq · Marassa · Mutates · Mynce · P. Eckstein · Queen of the Underworld · Rayne · Sigmund and Simon Krieger · Survivor · Teengirl · Voicu · Von Blut · Enemies|
|Brute · Dariel Zerenski · Ephemera · Ferril · Foreman · Kagan · Kagan Elites · Kasumi · Kestrel · Lockdown · ManCow · Mora · Ninja · Other Dhampir · Rayne · Roach Queen · Severin · Shadow Legion · Slezz · Suicide Bombers · Tremayne · Unraveler · Xerx Mephistopheles · Enemies|
|Crab Puncher · Crimson Demon · Kagan · Raven · Rayne · Zeta Gamma · Enemies|