Coconut Fred is the titular and main character of the short-lived tv series known as Coconut Fred's Fruit Salad Island. He is not only considered to be the worst character in the show, but also a horrid copy of SpongeBob SquarePants.
Why He Sucks
He is monopathic (meaning that he can only feel one emotion, and that emotion is joy).
He does not care enough about any resident on his fruit salad island (Yes, he is the one who created it.). In fact, he is a big nuisance to pretty much everyone on the island. This is also because of his nonexistent character developement.
His design looks creepy, especially in a child-friendly show.
It is possible that his personality is copied from SpongeBob SquarePants. This is also a reason why this show is called a "SpongeBob Rip-Off".
He is a Perfect Sue. Even many characters who are similar to him are polypathic (can feel multiple emotions).
Rob Paulsen hated being his voice actor. Even he admitted him being the worst character behind the infamous Bubsy who was also voiced by Rob Paulsen.