Carlos has a personality very similar to Ryder's. He loves going on adventures in the jungle, discovering new things, and learning about the animals that inhabit the jungle.
He is rather good with animals, as shown in his interactions with Matea and Tracker, especially with the latter. He seems to consider Tracker his best friend and is grateful that Tracker saved him from a snake when they first met.
Carlos is a bit younger than Ryder. He has pale skin with dark brown hair and blue eyes. He wears a beige fedora hat with a red and blue trim. He also wears an orange shirt, blue jeans, and brown boots in "The Pups' Winter Wonder Show". He is rarely seen with no hat.