Alex is a young boy predicted to be five or six years old. Due to his age, Alex doesn't listen or pay attention that much, as he is described as impatient. Alex loves school, as seen in "Pups Save a School Day".
Due to his age, Alex is very rambunctious and impatient. Like Marshall, he can sometimes be clumsy. It is shown in "Pups Pit Crew" that he wants to be in the PAW Patrol and wants to be like Ryder, so he builds his own super-trike. His desire to be a part of the PAW Patrol can also be seen in "Pups Save Alex". He is like a little brother figure to Ryder and Katie.
Alex is a young boy with pale skin, reddish-brown hair and blue eyes. He wears an orange T-shirt and dark green pants. When riding his Super-Trike or participating in activities like snowboarding he usually wears a yellow duckling-shaped helmet. He is not as tall as the other adults, but is about the same size as Precious' Owner.