This is a posable action figure from the Nendoroid series.
From the Good Smile Company website:
From "Urusei Yatsura", the popular manga series by Rumiko Takahashi that has remained popular for years on end comes a Nendoroid of Lum! She comes with three face plates including a gentle smiling expression as her standard face, an angry expression for when she gives her darling an electric shock as well as an innocent smile ready to serve her spicy home-made cooking to an unsuspecting victim.
Optional parts include electric shock effect parts, a dish featuring Lum's spicy cooking as well as an alternate body part wearing a pink apron. Be sure to add the Nendoroid of one of the first ever alien heroines in anime to your collection!