Amanda is the titular protagonist of the show, depicted as a seemingly friendly young girl with brown skin, black pigtails, and a yellow shirt with light blue jeans who grows increasingly uncanny, hostile, and demonic as her cartoon breaks down.

Wooly the Sheep is a soft-spoken, anxious anthropomorphic sheep who serves as Amanda's sidekick in the horror game Amanda the Adventurer. He wears nothing all he has is wool on, appears increasingly terrified and aware of the cartoon's sinister nature, and frequently tries to warn or protect the player from Amanda before she inevitably alters or silences him, sometimes stands up for himself but then Amanda cuts the screen before anyone can see then abuses him but nobody can see then turns the screen back on but Wooly just looks more scared after that but he doesn't look hurt but he is in the inside.