Real-world examples influenced character designs by artists Isao Ohishi and Ryoji Shimogama. For example, Ohishi based Leon on his bloodhound, and Annette Birkin was modeled after actress Jodie Foster. The police department was smaller and had a more modern and realistic design. There were more encounters with surviving policemen, such as a superior officer of Leon called Roy. Enemy models used far fewer polygons, allowing many zombies to appear on the screen. The game employed dynamic music, and altered pre-rendered backgrounds in response to gameplay events. The playable characters could use equipment such as protective clothes to enhance their defense and enable them to carry more items. The character models were altered by costume changes and by damage received from enemies. Believing the game's assets were good individually, but not yet satisfactory as a whole, Mikami expected that everything would coalesce in the three months leading up to the projected May 1997 release date. Shortly thereafter, however, "Resident Evil 1.5" was scrapped at 60–80 percent completion. Mikami later explained that the game would not have reached the desired quality in the aforementioned period, and felt the gameplay and locations were dull.