Like all the monsters in this play, D 'Artagnan also comes from the "upside down world" (the name of another dimensional world in this play), which is a worm-like creature discovered by Dustin in the second season.

d'artagnan

At the end of the first season, Will vomited a lot of bugs from other worlds, and D 'Artagnan should be one of them. Later, Dustin took it home as a pet. Dustin was named after D 'Artagnan, the protagonist in three musketeers, because he liked to eat the popular "three musketeers Chocolate Bar" at that time.

d'artagnan

D 'Artagnan is a larval form. When Dustin first discovered it, it was only the size of a finger, but this creature grew very fast and could adapt to the food in the human world (Dustin also fed it chocolate and all kinds of junk food).

d'artagnan

A few days later, D 'Artagnan grew from a yellow-green bug to a monster (magic dog) with a petal-shaped head and a hound-like body, and ate Dustin's pet cat.