Character from Undertale / Deltarune by Toby Fox
A small white dog who absorbs artifacts, steals bones, sleeps on your inventory, and is Toby Fox's self-insert — the game's creator living inside his own creation.
The Annoying Dog is Toby Fox in dog form — the creator of Undertale existing within the game as a small, unstoppable force of chaos. He steals Papyrus's special attack (a bone). He absorbs the Legendary Artifact in Waterfall's hidden room. He sleeps inside your dimensional box. He is immune to consequence. In Deltarune, a room in Card Castle shows the Annoying Dog developing the game on a computer, surrounded by programming notes. This is not a joke — or rather, it is a joke that is also literally true. The game is being made by a small white dog.
A tiny white dog with a perpetually happy expression. Small, round, and radiating the energy of a creature that does not care about your plans. He appears in unexpected places — inside puzzles, sleeping on the floor of your inventory, absorbing legendary artifacts.
Also known as: Toby Fox, The Dog