Peso is the medical officer for the Octonauts. He has become braver over time as shown in the Octonauts Movie: The Underwater Caves of Sac Actun. He is a small, kind-hearted penguin from a really large family that branches off into different species. He likes having a big family as they all look out for each other. Peso loves to help any injured creature, from blob fish to sharks to yellow bellied sea snakes. He is very shy and gets scared easily by Kwazii's spooky stories, but he can be brave w