When a 'Swordfighting at Sea' lesson is interrupted by a mysterious coffin running into the ship, the ship sinks and all the novices must swim to shore. They wash up on the Long Beach, along with the coffin. Gobber orders Wartihog, Bearhug, Sharpknife, and Clueless to carry the coffin back to Hooligan village.
As a Pirate Training Program student, Sharpknife built a small ship named The Raven in 'Shipbuilding' lessons, along with his partner Tuffnut Junior. They then participate in 'Board-an-Enemy-Ship' lesson on the Sea-Known-As-Woden's-Bathtub, along with the other novices. They are to board a Peaceable fishing boat, menace them, and take a helmet as a trophy. Sharpknife and Tuffnut Junior are one of the first pairs to spot the fishing ships amongst the fog on the sea.
Later, while waiting for Gobber to appear in the Great Hall for a 'Frightening Foreigners' lesson, Tuffnut Junior and Sharpknife "were having a swordfight in one corner."
There is no description or image of Sharpknife. However, it might be assumed that he is a hefty young teenager similar to most of the other Novices.
Sharpknife appears to be friends with Tuffnut in How to Be a Pirate.
|"How to Train Your Dragon":||Absent||"How to Ride a Dragon's Storm":||Absent|
|"How to Be a Pirate":||Mentioned||"How to Break a Dragon's Heart":||Absent|
|"How to Speak Dragonese":||Appears||"How to Steal a Dragon's Sword":||Absent|
|"How to Cheat a Dragon's Curse":||Absent||"How to Seize a Dragon's Jewel":||Absent|
|"How to Twist a Dragon's Tale":||Absent||"How to Betray a Dragon's Hero":||Absent|
|"A Hero's Guide to Deadly Dragons":||Absent||"How to Fight a Dragon's Fury":||Absent|