Pablo is a blue anthropomorphic penguin and the series' deuteragonist. He wears a blue bowtie on his neck and a blue-and-yellow beanie propeller hat on his head. He is best friends with Tyrone, and lives in a blue house located left of Tyrone's house. His interests include playing with his other friends, pretending, and going on adventures. He is enthusiastic and loves excitement on his adventures, but he's usually the first to react when faced with problem. He frequently has panic attacks, where he runs around in circles, telling himself or his friends to stay calm and not to panic, or getting alarmed and rambling out comical, unpositive things. Whenever Pablo starts to get worried about something, his friends are always there to calm him and assure him that everything will be okay.
Despite his fear of many things, Pablo will always help a friend in need. He is also a very clever little penguin. Throughout his adventures, he loves coming up with new ideas for him and his friends to make their pretend play more interesting.
Pablo's voice was provided by Zach Tyler Eisen in the first season, Jake Goldberg in seasons two through four. His singing voice is provided by Sean Curley. For live performances after 2009, Sean Curley (his singing voice) provided Pablo's voice, both speaking and singing. A new actor, Vincent Agnello, took Jake's place in 2012 as an understudy. Jake, as well as the other voice portrayers, voiced one more time in the re-recording of Sea Deep in Adventure in 2014.
Pablo is good-natured and tries to make everyone happy. He is an imaginative and frenetic little penguin who’s a bit tightly wound. He thinks, speaks, acts, and reacts quickly – but by no means is he a birdbrain. Pablo is always ready to help his backyard playmates as they explore the High Seas, the Frozen North, or the Wild West. He may not be the most agile or graceful of the friends, but he’s enthusiastic and determined.
In season one, Pablo got worried often and had a "panic attack" in almost every episode he appeared in (exceptions include It's Great To Be A Ghost!, Monster Detectives, and The Yeti). In season two, Pablo does not get worried as frequently and he is shown mostly as being enthusiastic and easily excited from time to time. In season three, he shows no sign of being scared to do something, with the exception of the episode Pirate Camp. This also had an affect on his popular "panic attacks", which he did not encounter during season three, except for the episode Caveman's Best Friend. The panic attacks were brought up again in an episode from the fourth season, The Flipper!, though in this specific instance it was excitement as opposed to panic. During the fourth season, Pablo's bond with Austin was much stronger and more best-friend-like than it had been in earlier seasons.
Pablo lives in a dark blue-colored house located to the left of Tyrone's house and to the right of Tasha's house. In front of his house is a wooden patio with a picnic table and an umbrella colored blue and yellow. In front of the deck is a blue polka-dotted swimming pool.
Pablo's head, arms, back and toes are of a blue color and his chest and legs are a pale yellow. His arms end in mitten-like flippers. He has a blue bowtie and a blue-and-yellow beanie hat with a red propeller, which are the only clothing he wears outside of a story. He has a yellow beak, a pink tongue and dark blue eyelashes. Pablo is the only character who has toes. His winter outfit consisted of a red cap striped with a light and dark shade, a red puffer vest, and a set of red mittens. In the fourth season, his puffer vest was removed.