Sprout is a very large wolf with strawberry red fur. He has long mint green leaves atop his head and his ears and tail are made out of leaves. Sprout is very overprotective, straightforward, and pragmatic. He wears a white scarf with pink stripes. He has excellent speed and stamina and he acts as a leader. His overprotectiveness can be a little bit overbearing at times. Despite being straightforward, he enjoys nature and is very kind-hearted. He has a high-pitched and soft voice that doesn't match his strength at all. He wears white arm and leg warmers with pink stripes on his paws. He wears a pink flowy red bow with a red heart charm around his neck. He has a flower crown of daisies with yellow pistils atop his head. He is the largest member and best medic of Pyrothermal. He is Head Medic. He is not muscular— but he is bulky and very fluffy, which makes him appear very big. He has lighter pink spots on his back, tail, forehead and cheeks, appearing similar to dots on a deer. He has a lighter pink underbelly and lighter pink paws. He is known as "Gentle healer" or "gentle giant".

A blue-gray large wolf with a sea pink crescent moon mark on her forehead. She wears a grey shawl with sea pink accents. She howls the loudest and she is easily excited. However, easily frightened by thunder. She is the most agile of Pyrothermal. She fears the gorge.

A small wolf with curly brown fur and white paws, ears, and belly. He has star sprinkles on his tail and his tail is curled. He is Sprout's closest friend and he is also gullible but generous. He has white leg warmers on his front and back legs. He is quick and intelligent in Pyrothermal. He is Medic Assistant.

Astro is a light blue wolf. On one half of his body, his fur is black. The other half is light blue. There are white star patterns on the black fur while the light blue side remains plain/blank. Astro's tail has curly fur. He has an "ability" to put others to sleep through soothing lullabies. He has dark blue moth-like antennae and wings. He is sleepy but is strategic in Pyrothermal. He is a moth/wolf hybrid, the first hybrid.

A large white wolf with rainbow stripes on his fur. His limbs and tail are mint green. He's the absolute leader of it all. He is cheerful and upbeat, and enjoys being with friends and his best pals— Pebble and Astro. He is the leader of Pyrothermal.

A small grey juvenile wolf with lighter grey paws. He is very excitable but gets angry easily. He can't talk English like the others can— he can only say "Arf!", "Bwoof!", or "Bworf!" He is the smallest in the group. He loves chewing on a dog bone and he loves to play fetch. He's the smallest in Pyrothermal.

Shelly is a beige wolf with an interest in dinosaurs. She loves napping on rocks in sunny spots, and she's also an excellent swimmer. She is very good at emotional support. She is the most excitable in Pyrothermal and the second smallest.

Glisten is a large, light golden, elegant cat with a pink bow tied around his tail. He wears white leg warmers on his front and back legs and he always prances around "elegantly", he says. He is a fashionista and loves beautiful cats or dogs. Naps in high places. He is the most elegant in Pyrothermal.

Bassie is a light brown wolf-fox with curly fur and light purple Hyacinth's in her fur. She is described to be shy and she likes Easter. She always tries to be like Cocoa and anxiously tries to help out. She is the most shy in pyrothermal.

A brown wolf/bunny hybrid. She is excitable and easy to please, and she always wants to help others out with small tasks. She has a small crush on Cosmo and enjoys helping him with baking as much as possible. She has long ears while also having a long tail and bunny/wolf abilities. She is the second hybrid in pyrothermal.