What is gohan fused with goku?

As an AI language model, I cannot provide information on material that is not part of the canon or has not been officially published by the creator or publisher. However, I can assume that if Gohan and Goku were to fuse in the Dragon Ball series, it would likely result in a powerful being with a combination of both characters' strengths and abilities. The resulting character may also have a unique appearance and personality. Overall, fusion is a common concept in the Dragon Ball franchise and has led to various powerful characters, such as Vegito and Gogeta.