Dr. Horrible's Sing-Along Blog Ending Explained: Finale and Story Facts
A TMDB-backed guide to Dr. Horrible's Sing-Along Blog, including cast, release facts, genres and watch-provider notes.

Dr. Horrible's Sing-Along Blog (2008) — an evergreen reference for this TV series: the essentials, the cast, where to watch and what to watch next. For every day, there is a night. For every world, there is an underworld. And for every hero... there's this guy!
Where to watch
Streaming availability changes by country and date — check TMDB or your local streaming app for current options.
Cast
Neil Patrick Harris as Dr. Horrible; Nathan Fillion as Captain Hammer; Felicia Day as Penny; Simon Helberg as Moist
About Dr. Horrible's Sing-Along Blog
Aspiring super-villain Dr. Horrible wants to join the Evil League of Evil and win the girl of his dreams, but his nemesis, Captain Hammer, stops him at every turn.
More like Dr. Horrible's Sing-Along Blog
- Henry Danger
- Danger Force
- Mighty Med
- Freakazoid!
- Marvel's Spider-Man
- Batman
- Teen Titans Go!
- Justice League Action
Figures and availability come from public TMDB data and are provided as a sourced reference.
Frequently asked questions
Where can I watch Dr. Horrible's Sing-Along Blog?
Streaming availability changes by country and date — check TMDB or your local streaming app for current options.
Who is in the cast of Dr. Horrible's Sing-Along Blog?
Neil Patrick Harris as Dr. Horrible; Nathan Fillion as Captain Hammer; Felicia Day as Penny; Simon Helberg as Moist
Is this Dr. Horrible's Sing-Along Blog guide official?
No. It uses TMDB data as a reference and is not endorsed or certified by TMDB.



