Note from the UndergroundNote from the Underground.

While many comic books based on the Buffy the Vampire Slayer television series were published while the show aired, they are not all considered canonical. Some feature characters who do not appear in the television series, such as the Tales of the Slayers and Tales of the Vampires miniseries. The first series of books were published by Dark Horse Comics between 1998 and 2004, initially in comic format and later collected into volumes of trade paperbacks.