As Charlie's creators put it, they were after "a fast submarine-shaped fish with a relatively rigid torso that swims with fairly small body and tail motions".

正如查理的创作者所说的那样，他们在“拥有相对僵硬的躯干的快速潜艇形鱼类靠相当小的身体和尾巴摆动来游水。”