In legal procedure (both civil and criminal), misjoinder (also known as wrongful joinder) involves the improper inclusion of one or more parties or causes of action within a lawsuit.[1] The two forms of misjoinder are:[2]
According to FRCP, Rule 21,[3]
Misjoinder of parties is not a ground for dismissing an action. On motion or on its own, the court may at any time, on just terms, add or drop a party. The court may also sever any claim against a party.