the secondary protagonist of the series. he is a little herrerasaurus that lives with pororo. he is discovered one day as an egg, which hatches later and is adopted by pororo as little brother. crong is the youngest of the group. he is 3 years (4 in season 3, 5 years old since season 4). he is usually with pororo and is constantly getting into trouble. crong does not speak and he can only say his own name, "crong!" to communicate, but is seen seen speaking in a time from the second season. from seasons 3 until 6, he wears a light blue aviator jumpsuit, red bandana, and matching gloves. his instrumental is the cuica.