LEGO Super Mario 71397 Lab and Poltergust

LEGO 71397 Luigi's Mansion Lab and Poltergust is a Super Mario Expansion Set. It builds a lab scene with a Lab Machine and a start platform and includes brick-built characters Professor E. Gadd and a Gold Ghost. The set features a Poltergust Power-Up accessory for LEGO Luigi that can also be equipped by LEGO Mario, and requires a Starter Course (71360 or 71387).

It was retired in April 2023 with a lifespan of 15 months.