This page details pre-release information and/or media for The Mask.
Nintendo Power Issue #76#
Page 82 of the September 1995 issue shows a different boss fight for Landfill Park: Two police officers, alongside police cars in the boss arena. The final release's groundskeeper boss was instead a regular stage enemy.
According to Matt Harmon, the game's lead programmer, this boss fight (alongside police enemies for the Jail House level) was cut near the end of development due to concerns of appearing politically incorrect.
(Source: Games Done Quick)
(Source: Original TCRF research)