In Dragon Ball Fusions, there are several hybrid forms that are the result of fusion causing two or more distinct forms to be merged into one new one.
Super Saiyan and Legendary Super Saiyan hybridA form utilized by Karoly. In this state the user primarily maintains the appearance of a Super Saiyan, with mostly gold hair, though the hairstyle more closely resembles that of a Legendary Super Saiyan, and the frontal hair is colored green like a Legendary Super Saiyan.
Super Saiyan and Super Saiyan 4 hybrid
A form utilized by Tekka's Ultra Fusion when a pure Saiyan male (such as Kid Goku in the story) is the one to instigate the fusion (or Tekka is a male Saiyan). In this state, the user appears to be a golden Super Saiyan 4, though the hair on their arms does not go all the way down and is restricted to their shoulders. Female Saiyan Ultra Fusions lack the golden Super Saiyan 4 fur and their Super Saiyan form resembles a female Super Saiyan 3.
Ultra Pinich also appears as a golden Super Saiyan 4 but his fur is limited to the upper portion his back and under part of his chest. However Ultra Pinich can transform into a Golden Great Ape as his Super Saiyan form is apparently due to the influence of Pinich and Cell's Super Saiyan forms (unlike Ultra Pinich, Cell lacks golden hair but possess a Super Saiyan aura).
Through Freeform Fusion, a Super Saiyan can fuse with a Super Saiyan 4 to create a mixture of the two forms with some having Gold hair and Red fur similar to the original unused Super Saiyan 4 design.
Super Saiyan Rosé and Legendary Super Saiyan hybrid
A form utilized by Karoly Black. Appearance-wise, it is nearly identical to the Super Saiyan and Legendary Super Saiyan hybrid used by Karoly, however, the gold parts of Karoly Black's hair are pink instead.
Additionally the form possesses Godly ki through the influence of Super Saiyan Rosé, the Super Saiyan God Saiyan Super Saiyan form of fusee Goku Black as Goku Black was originally Zamasu a divine being (a Core Person) and proper deity (former North Kai and apprentice Supreme Kai of Universe 10) who stole Goku's Saiyan body which allowed him to acquire Super Saiyan Rosé instead of Super Saiyan Blue as it is the Super Saiyan God Super Saiyan form of a Saiyan who is a proper deity.