Hiccup's Prosthetic Leg

"...He got me back. Right, bud? You couldn't save all of me, could you? You just had to make it even. So, peg leg!"

- Hiccup explaining to Valka why he's got a metal leg

Hiccup's Prosthetic Leg, Hiccup lost the lower half of his left leg in the battle against the Red Death. Gobber made him this leg, "with a little Hiccup flair thrown in" along with Toothless' new tail.

Appearance
The leg is made out of metal and wood. The wooden section, acts like his ankle is attached to his leg while the metal part, which acts as his foot, is hooked onto the wood.

Lore
In Gift of the Night Fury Hiccup has gotten used to his new leg, but still slips on the ice—in fact, he does it twice. Toothless is usually there to catch him. The leg also plays occasionally pokes in the DreamWorks Dragons series.

In How to Train Your Dragon 2 Hiccup has a new modified leg in the second film. It is shown to have a few gears in it and slots for the ends to rotate while being swapped. Dean DeBlois describes it as the "Swiss army knife of prosthetics." The new leg is able to change ends when turned, with one end designed for when Hiccup is flying with Toothless and the other used for when Hiccup is walking, able to switch between the two settings with ease. The third prosthetic part is like a blade with teeth for ice.