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Captain Hammer

I hate the homeless...ness problem that plagues our city.
~ Captain Hammer misreading his cue cards at a benefit to help the homeless.

Captain Hammer is the main antagonist of the 2008 musical comedy-drama miniseries Dr. Horrible's Sing-Along Blog.

He was portrayed by Nathan Fillion, who also played Caleb in Buffy the Vampire Slayer, Gao the Lesser in Jade Empire, the Monstrous Inmate in Guardians of the Galaxy, Preston Northwest in Gravity Fals, Cornvelious Daniel in Rick & Morty and The Detachable Kid in The Suicide Squad.


Despite being technically a superhero, Captain Hammer is ironically more evil than his supervillain nemesis known as Dr. Horrible. He just acts like a hero so that he can have sex with women, and to spite Dr. Horrible.

He enters the film by attempting to thwart one of Dr. Horrible's heists, inadvertantly meeting Penny, Dr. Horrible's crush. As Penny starts to fall in love, Dr. Horrible becomes enraged and plans to assassinate Hammer in order to join the Evil League of Evil.

Meanwhile, Hammer is at a press conference, giving quite possibly the most insulting speech ever to the homeless. After Captain Hammer sings the song "Everyone's a Hero", Dr. Horrible appears and stops him with his Freeze Ray. However, Horrible cannot bring himself to kill Hammer, and the Freeze Ray shuts down. Hammer punches Horrible in the face, damaging the Death Ray in the process. Hammer is done in by his own arrogance when, refusing to listen to Horrible's warnings, attempts to fire the malfunctioning Death Ray, which explodes, causing Hammer to feel pain for the first time in his life.

The blast also kills Penny, gaining Dr. Horrible infamy, as well as entry into the Evil League of Evil. During the final song "Everything You Ever", Captain Hammer, now reduced to a crying mess, is seen with a psychiatrist.