Dorarinho is a green cat-model robot featuring white irises, a bright red round nose, and yellow three-pointed lines on each cheek replacing whiskers. His design includes a white face, circular white paws, and a tail shaped like a string tipped with a red orb. He sports an orange soccer uniform with a bold red "B" on the chest, red socks, black cleats, a red collar adorned with a tiny soccer ball, and red wristbands. A fourth-dimensional pocket sits on his white midsection.

Bubbly and happy-go-lucky, he energizes his group as a mood-maker, easing tensions with his exuberance. Yet he is profoundly forgetful, losing memories within three steps. His naïveté leaves him vulnerable to deception, and he harbors a fear of the occult. Eccentric and impulsive, his hastiness often validates the adage "haste makes waste."

A soccer genius, Dorarinho dominates as a forward with uncanny instincts—capable of scoring from the opposite end of the pitch. He travels with 11 identical Mini-Doras, companions and minions whose gadgets occasionally enhance his fourth-dimensional pocket.

His life orbits an unnamed football club where he doubles as ace forward and co-coach alongside best friend Nobinho—a nod to Robinho and Nobita Nobi. Among friends, he bonds closely with Dora Med III, his babysitter. Spin-off tales exaggerate his forgetfulness, such as surviving space unaided because he "forgot" suffocation. His name’s "-inho" suffix reflects Portuguese football culture.