Clyde is a tall and obese anthropomorphic cat, weighing physically more than 300 pounds. His primary fur is light brown with dark brown stripes that bear a heavy resemblance to a tiger. His secondary fur for his hands, feet, muzzle, and belly is cream-colored. His tailpoint is dark brown like the stripes. He has bushy clumps of hair that is parted to the sides. He also has dark brown outlines around his eyes. His eyelids are light indigo. His nose is bright red. He also has buck teeth that are separate from each other.
Clyde calls most of his friends his 'pals', including Tom. Despite Clyde being clumsy, most of times getting accidentally hurt and sometimes accidentally hurting even Tom, he and Tom are friendly with each other. They first met in the Tom and Jerry Kids Show episode, My Pal.
Due to him being a cat and Jerry a mouse, Clyde seems to be enemies with Jerry and he's on Tom's side, since he cheered for him to catch Jerry and handshaked him whenever he 'caught' Jerry, though Jerry escapes most of times due to his cleverness.
- Clyde's voice actor, Brian Cummings, was famous in announcing various movie trailers including Tom and Jerry: The Movie in 1992. and on the 80's game show, "The All-New Let's Make a Deal" starring Monty Hall, and at a lesser extent, Cummings was the announcer for the pilot episode of the Kids' Game Show, Fun House starring J.D. Roth. He also voiced Merry Walrus in the Club Penguin special "We Wish You a Merry Walrus".