Dr. Bubbles was a selfish and self praising oceanographer who always took all the credit for all the hard work his assistant Trusty did. He loves publicity and his main goal was to be rich and famous and was determined to let nothing stand in his way. He is also shown to be lazy and unkind to Trusty, one such time is when he loses the mermaid he is searching for and sends Trusty to search for her instead of him.