This fic contains examples of:
- Took a Level in Badass: Penny, who is revealed to have superpowers.
- Relationship Upgrade: Penny and Billy/Dr.Horrible, complete with The Big Damn Kiss.
- Million-to-One Chance: Lampshaded, although it's actually Foreshadowing.
- Plucky Girl: Penny, to the point of Silk Hiding Steel.
- Broken Pedestal: Penny discovers that the Heroic League of Heroes is actually a bunch of selfish, egotistical jerks.
- Despair Event Horizon: Dr.Horrible, after Penny dies again, although she's not actually dead.
- Cooldown Hug
- We Can Rule Together: The Heroic League of Heroes attempts this.