| Character Name: | Nightrider |
| Publisher: | DC Comics |
| Debut: | The New Titans #79 (September 1991) |
| Creators: | Marv Wolfman |
| Full Name: | David |
| Alliances: | Teen Titans |
| Aliases: | Dagon |
| Powers: | Vampiric physiology |
| Cat: | super |
| Subcat: | DC Comics |
| Hero: | hero |
| Sortkey: | Nightrider |
Nightrider (Dagon) is a fictional vampire superhero from the DC Comics universe. He is a member of the Team Titans, a rebel group seeking to overthrow Lord Chaos, the dictator of an alternate Earth ten years into the future.
Dagon originates from an alternate timeline ruled by Lord Chaos. At the age of 14, he is kidnapped and experimented on by Chaos, who transforms him into a vampire by infusing him with Dracula's DNA.
Dagon later joins the Team Titans to get revenge on Chaos, adopting the name Nightrider. He and the group travel to the past to prevent Chaos' birth, during which he prevents his own creation.
Dagon is later killed during the event when the timeline collapses.