Rubble is an English bulldog pup and the youngest member of the PAW Patrol. He is the construction pup. His main color is yellow. His truck looks like a bulldozer, modified with drills and other construction tools. When using his Mighty Pup powers, Rubble can lift, pull, and push anything in his way with super strength, and he can also pound the ground with his super strength to cause small tremors. When he combines paws with one of his team mates while in Mighty Pup form, he gains the ability to turn into a ball and ram into things with incredible strength, making him a wrecking ball of sorts.
Rubble's super strength has gained him a friendly rivalry with Mr. Incredible, PJ Masks members Gekko and Armadylan, Superman, and many other characters with super strength.
When Professor X met the Mighty Pups, he decided to give them nicknames, save for Rubble, seeing as he felt that his name was good enough and it suited him since he is the construction pup of the Paw Patrol.
Due to his ability to become a wrecking ball, Rubble's friendly rivalry with Armadylan has increased, as he can do the same thing. He also formed a rivalry with Sonic the Hedgehog, as Sonic can also roll into a ball, though he's not super strong while rolled up.