The nature of Helmut Schein is inconsistent between games.
In GTA San Andreas, Helmut Schein is implied to market perfume, advertising "Shine Perfume" in a avant-grande manner on the radio (similar to real-life perfume commercials on that era).
In GTA Liberty City Stores, players can find a Helmut Schein Chinatown, Portland, Liberty City circa 1998, while another Helmut Schein in GTA Vice City Stories can be found at the Vice Point Mall in Vice Point, Vice City circa 1984 on the northwestern wing of the mall besides Flyingdale's, complete with a visible but inaccessible interior.
While the Helmut Schein storefront in GTA Liberty City Stores is devoid of any interior or details to indicate its type of business, the GTA Vice City Stories Helmut Schein's interior contains sofas, coffee tables, and two counters, hinting that it may also be a furniture store similar to KLÜNT.
- Helmut Schein is a play of "Helmet Shine".
- The Helmut Schein billboard in Francis International Airport, Shoreside Vale, in GTA Liberty City Stories, is based on an early pre-release screenshot of the interior of the Mulholland safehouse in Grand Theft Auto: San Andreas.