The entire joke is that Robbie is actually the least lazy person in town.

Even Stephanie and Sportacus are only passively active.

They are very active people, but are just active because they enjoy it and generally aren’t really actively trying to accomplish anything. They just live active lives and most of their goals are simple and short term.

Robbie goes out of his way seemingly every day. He puts in an absurd amount of effort towards ruining things for other people, and is damn quick and in pretty good shape considering what we see of his diet.

A guy that eats like he does should be about 130 kg plus [300 lbs]. He can almost keep up with the town superhero who eats like a rabbit and spends all day doing pushups and cardio. That can only mean he’s burning way more calories on average daily than Sportacus.

He climbs, runs, sneaks, and jumps all over town.

Sure, he gets winded for comic effect, but only after doing more in five minutes than most people do all day.

Dude has a cosplay Batcave full of hand made costumes, a self installed low tech surveillance system, a tunnel system that spans the entire town, he regularly builds and moves heavy equipment by hand, builds various traps by hand with low tech tools, owns and maintains enough equipment to supply an entire construction company by himself, and actively involves himself in almost everything going on in town, even if it is with the intention of spoiling whatever it is for everyone else.

He also has to perform upkeep maintenance for all of that.

That takes effort, and not a small amount of it.

Dude built, positioned, loaded, aimed, and fired a canon that would easily weigh over a ton by himself once. Bro lifts.

People also say that he never wins, but his goal is often to have enough quiet to take a nap, and much of the time the episode will close out with him passed out somewhere.

Everything he does he does in the name of sitting around all day with a pile of junk food and nothing to do.

His day to day plans may not work out very often, but he wins at life.

Robbie is my spirit animal. I too will go to absurd lengths to avoid doing what I’m supposed to.