|First appearance||"Guardian Angel"|
Taffei is a product of Chenho Li's engineering and the alien organism he and Goryu discovered in the crashed ship on the Mystel asteroid. However, where its partner, Meifon Li is a bio android, Taffei is neither android or cyborg, but a living organism made of "fluid metal".
Taffei has the power to transform into a long sword which bears angelic and demonic qualities. Despite its status as a weapon, Taffei has an established self-consciousness. Taffei usually hides in her cleavage until Meifon calls for its help.