Goyan is on Akudaikan's side as one of his evil cohorts. He is a short, mockingly character who will openly taunt others and seems to enjoy making them angry. As shown by how much he taunted and mocked Karehan during his attemps to defeat Pretty Cure. Ms. Shitataare calls him "Go-chan".
He is later revealed to be the true creator of the Dark Fall and the true mastermind behind the events of Pretty Cure Splash Star. He also created Akudaikan.
Goyan resembles a frog/toad-like figure dressed in dark Chinese-like outfits with long white sleeves, red slit eyes, and sandals with socks. He normally poses as if he holds a cane.
The above appearance, of course, is just a facade; his true form is that of a giant, muscular, green-skinned humanoid being with white hair and a single horn and black pants.
At first he seems like he's just Akudaikan's most powerful lackey and acts as his underling though most of the series but in episode 47, it is revealed that he was the one who has created Akudaikan and the true villain using Dark Fall to destroy the fountains. After killing Akudaikan, he transforms into a gigantic monster but is eventually defeated by Pretty Cure's Spiral Heart Splash Star in the final episode.
- He is the first main villain who is the man behind the man, followed by Dune from HeartCatch Pretty Cure! and Noise from Suite Pretty Cure♪.
- His and the other main villains' silhouette (Dark King, Desperaia, the Boss, Moebius and Dune) are seen in Pretty Cure All Stars DX 3: Mirai ni Todoke! Sekai wo Tsunagu☆Niji-Iro no Hana. Goyan's silhouette represents the Dark Fall.