Leo is the tritagonist of the 2015 reboot of Bob the Builder. He is Bob and Wendy's goodhearted apprentice and college student who is eager to learn the tools of the trade. He is an enthusiastic, messy and impulsive apprentice builder. He is young, tech-savvy, eager to learn about the world of building and desperate to become a builder in his own right. But is easily distracted, which can often lead to problems that range from minor mishaps to complete chaos.
Leo is voiced by Jacob Scipio in the UK and Daniel Bacon in the US.