Skull is a Sharpclaw. He has orange and green scales and amber eyes.
Skull is often portrayed as the most pessimistic and insensitive member of the team, and he generally regards everything in a "black and white" manner. He is also very brutal and hostile towards others. He speaks with a hissing, raspy, voice, which makes it difficult for some people to hear or understand him, a source of frustration. He is shown to have a dry humorous side to his personality as he chuckles at some of Mars's jokes. He also loves food, including insects and sweets. He also likes rock music.
He fights using a blaster and a long spear.
Trivia:
Skull's name comes from his family's motto, "Skull and Crossbones".
He is the only Sharpclaw seen in the show.