Coal is a dark gray rock-like dog who takes on the appearance of a boulder, with two black bone marks on the side of her face that resemble a snowflake. Coal has a bored expression on her face, with her large rectangular eyebrows further proving this. Coal also has large red earmuffs with a flag on it, the flag having a similar snowflake design to the marks on her face, he is a bit grumpy and can easily get annoyed. Coal is Bobette's trusty pet rock