After four seasons on Netflix, Castlevania came to its shocking conclusion, killing some main characters while leaving others in entirely different places from where they started. In the end, Trevor Belmont found himself in a showdown with Death when Saint Germain attempted to bring Dracula and Lisa Tepes back from the dead as a Rebis to wreak havoc on Earth.
Source：https://www.cbr.com/castlevania-season-4-ending-explained-trevor-dracula-survive/
