David the Gnome

We learn that gnomes have the ability to shrink pure hearted humans who believe in them

We learn that before Swift, David's fox companion was Nimble, Swift's father.

Once again the trolls are seen in the sun and not turned into stone

Gnome heads, hearts, and livers are proportionately larger than a humans.

When gnomes die, the tree planted on the day they were born also dies.

According to the map Lisa uses, the forest she and David live in is located in what is modern-day Belarus.

Goof: The seagull was high up on a branch, so how did Swift get up there face to face?

If the police thought the gold was stolen, why didn't they confiscate it when he was arrested?

Goof: The trolls are out and about in the day time and not turned into stone.

Female gnomes only give birth once in their life, and it's always twins.

This is the first time we see David use his animal hypnosis powers

Goof: David stated in the first episode that he'd never actually seen any other mystical creatures (wizards, elves, etc.) before. So then how does he know the Elf King?

Goof: Despite clearly being daytime, Holler and Pat are neither turned into stone or concerned.

Goof: When the gnomes attack the trolls in the snow field, an unnamed 5th troll is inexplicably with the group.

This is the first time we see a troll turned into stone upon touching sunlight.

The different types of gnomes, according to David:

Forest Gnomes
Dune Gnomes (sand/desert dwellers)
Garden Gnomes
House Gnomes
Siberian Gnomes (snow dwellers)