Krypto the Superdog: 2x2

Mechani-Bot/Stretch-O-Mutt To The Rescue

When Mechanikat builds a robotic version of himself to help run his ship, the robot turns on him. Then when a guard dog named Buddy falls into a vat of rubberizing solution, he becomes Stretch-O-Mutt, the newest canine crimefighter in Metropolis.