Cassie the human age 14
Thorn the spikey monster fox age 114 (in monster years)
Fuzz the fuzz monster age 115 ( in monster years)
Cassie is a human who came from Virginia to an old run down haunted house that is in the middle of forest until they found a closet that has a portal that leads to a monster island

Thorn is a spikey monster fox like creature who is always irritated, and very stoic and short tempered at times but he occasionally smiles.

Fuzz is a fuzzy monster girl who is a closet friend she happy, funny, and likable monster. But she dislike her 5 arch nemesis popular 5 Monsters who are very snobbish and mean.