The Gloom Meister is primarily purple. He wears a purple coat, a bowler hat, purple pants, black shoes, and black glasses. He also wears a metal glove on his right hand called the "Shadow Ray".
The Gloom Meister has an evil laugh "Wua-ha-ha-ha-ha!". He explains to Uniqua that it is not his real laugh, he does that to sound scarier; his real laugh is a ridiculous combination of giggles and snorts.
Austin has played the Gloom Meister in one episode of The Backyardigans: "Flower Power" from season four.