Captain Barnacles is the captain of the Octonauts and a brave polar bear. Along with being the captain, Barnacles is also the strongest member of the crew, and he's demonstrated that in a number of different episodes. He's also one of the most level-headed crew members, often dismissing Kwazii's outlandish stories about sea monsters and ghosts. His crew has a lot of respect for him. He's mainly one of the most iconic characters out of all the Octonauts, and plays as the main character mostly. It

Founder of Octonauts, this respectable character is also an oceanography professor. But unlike the other characters, he prefers to stay indoors, mostly spending his time in his library in the octopod. With that, here is Professor Inkling of Octonauts in real life.