Nuls
Nuls are green, octopus-like creatures that inhabit the islands of Big Adventures Park. They can be found in every region except Icy Peak. Nuls are silent creatures that do not talk but are often helpful to the residents of the park, and will often help run shops while Island Residents are occupied with other activities. Most Nuls can be interacted with to have hats put on them or taken away, and are the only characters that can wear the Nul Ghost Costume.
Special Nuls
These Nuls have special functions compared to regular Nuls found across the island.
Game Nuls
These Nuls help run the mini-games found in Spooky Swamp, Rainbow Reef, Gemstone Mountain, and Mount Hothead. They wear a red visor and are always stationed at their respective mini-game locations. The hats on these Nuls cannot be changed out.
Witch Nul
This Nul shows up before and during the "Re-Haunt the Spooky Swamp" quest. It wears a Witch Hat, and prevents the player from entering the area unless they are wearing a Witch Outfit. Once the player enters wearing a witch outfit, it leaves and is not seen again in-game.
Propeller Hat Nul
This Nul appears during the "Cinnamoroll is Missing" quest. After Cinnamoroll asks the player to find the Mailbox Key on the Airplane, the player is given a Propeller Hat to put on a Nul near the Resort Plaza fast-travel point. Once done, this Nul can take the player up to the Airplane when requested. It is currently the only way to return to the Airplane in-game.
Nul Boat
These two Nuls wear hats and ride all around Friendship Island on a boat. The player cannot interact with these Nuls.
Collector Hat Nul
This Nul appears during the "Terra Nul" quest series. After Pochacco will then gift the Collector Hat to the player, the player must then give the Collector Hat to the Nul standing outside of Small Gift Big Smile. Once done, the player can ask the Collector Hat Nul for help in gathering various materials. The materials can be collected from the Collection Box the following day.
Sprinkler Hat Nul
You will receive the crafting plans for the Sprinkler Hat during the Friends of the Flowers quest. The player must craft the Sprinkler Hat and put it on a nul.
Gallery
Player interacting with a Game Nul at the Gem Match mini game.
A player waving to the Nul Boat in Rainbow Reef on the north side of Cozy Islands. (Credits to @SharkTheFwisherman)
Location of the Nul Boat in Rainbow Reef on the north side of Cozy Islands. (Credits to @SharkTheFwisherman)
A player waving to the Nul Boat in Rainbow Reef, standing at the end of Chococat's Pier in Seaside Resort. (Credits to @SharkTheFwisherman)