Joseph Joestar is the main protagonist of JoJo's Bizarre Adventure Part II: Battle Tendency. He returns as a supporting protagonist in JoJo's Bizarre Adventure Part III: Stardust Crusaders, albeit much older.
Joseph is the biological grandson of Jonathan Joestar, as well as the biological father of Josuke Higashikata and the biological grandfather of Jotaro Kujo. In Battle Tendency, he is an 18-year old young adult living in New York with his grandmother Erina. Joseph is a big jerk and loud mouth, who loves playing tricks on others. He possessed a innate ability of using Hamon energy, though very weak. He is forced to face the powerful Pillar Men, the creators of the Stone Mask, who awake from their slumber and now seek the Red Stone of Aja, with which they seek use in combination with the Stone Mask to become immortal. In Stardust Crusaders, Joseph returns decades later, now an elderly 69-year old man, to act as a mentor figure to his grandson Jotaro, helping him on a quest to find and kill Dio Brando. The two incarnations of Joseph from Battle Tendency and Stardust Crusaders are sometimes referred to as Young Joseph and Old Joseph, respectively, in order to distinguish between the two.
In M.U.G.E.N, Joseph Joestar has been made by various creators, in both his Young and Old incarnations.
Nimame's version (Old Joseph)
Nimame's version of Old Joseph is a slow, but strong character with a few unique abilities, such as using his Stand, Hermit Purple, to grab his opponent from a distance and either pull them towards him or deal damage by sending Hamon energy through his stand, which is performed by mashing attack buttons while the opponent is grabbed. He also has a counter move in which he charges himself with energy. With a good amount of versatility to his techniques and methods to approach their opponent, he is a solid choice of character to play.
His A.I. is slightly above normal, and will use his Hypers effectively.
Nimame's version (Young Joseph)
Nimame's version of Young Joseph, also known as simply "Jojo", has a few similarities to his older counterpart, but lacks a Stand mechanic, as he had not developed his Stand yet. Instead, he has a variety of extra attacks based on the tricks and techniques he used while he was the main character of Part 2 of Jojo's Bizarre Adventure, Battle Tendency. These attacks include both crossbows from the Wham (or Wamuu depending on translation) battle, with the larger crossbow having a ricochet effect on the background, and his signature Clackers, which can be used in devastating melee attacks as well as thrown to deal damage at a distance. He is a bit fragile, and a few of his moves are a bit specialized in nature, but he is capable of some truly swift and powerful assaults.
His A.I. is a great deal stronger than his older counterpart's, and will utilize his Clacker Volley attack frequently, as well as perform deadly combos on a regular basis.