|Date of death:||1939|
|Place of death:|
|Position(s):||Leader of the Brimstone Society|
|Relatives:||Rayne (Adopted Daughter)|
Prof. Tremayne is a father figure for Rayne and one of the last few humans she truly cares for. He is the leader of the Brimstone Society.
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 after he had infiltrated Brimstone headquarters, 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 who have Vampire blood, possibly including Rayne. Tremayne pulls out a detonator, gives Rayne time to run and dies in the explosion, along with the German army guards 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|