The Last Skull is a Web Serial Novel with "Teenage Superheroism. Explosions. Time-travel." that follows 16-year-old Sue Daysdale after she finds a hidden message from her dead mother and is flung into a world of superheroism, with Registered Superheroes and villains who range from 15-year-old Techno Wizard Woot to aging Silver Age villains like the Toy-Master and Boomerang Kid.
- Action Girl: Sue, as well as her mother.
- Badass Grandpa: Sumerset, Sue's mentor and handler.
- Badass Normal: Boomerang Kid, who is perpetually more dangerous than most people expect or want to admit.Sue: You know what I find hilarious? The fact you're actually less dangerous than some guy with a gun.
Sumerset: Don't underestimate him. Everybody always—
- Sumerset himself, with the Arsenal suit.
- Dressed in Layers: Sue has worn some of the Skull suits under her school clothes
- Powered Armor: The Arsenal suit.
- Legacy Character: The Skull, Blink.
- Muggle Power: Cape Busters and Scourge.
- Power Glows: Paladin.
- The Power of Rock: Rockstar is this trope personified. He was crafted to bring about Ragna-Rock (aka 'The Rockening') and caused the destruction of Pompei with one of his "wicked riffs".
- Pre Ass Kicking One Liner: "Taste electrified science, abominations!"
- Super Serum: The Skull Formula, how Sue (and, presumably, all the Skulls) got their powers.
- Super Speed: Blink.
- Super Team: The Society, Epoch.
- Wake Up, Go to School, Save the World: Sue