Reference

During the Secret Invasion storyline, Z'Reg, also known as Crusader, used his reality-altering Freedom Ring to manipulate 3-D Man's goggles. This alteration made it seem like certain individuals were not Skrulls, even when they were. Conversely, it made other characters appear to be Skrulls when they were not. This led to significant confusion and misinformation for 3-D Man, who relied on his specially designed goggles to identify Skrulls. The manipulation by Z'Reg greatly affected 3-D Man's ability to trust his own perceptions and caused disruptions in his actions against the Skrull invasion.

For more detailed information, you can refer to Marvel Database on Z'Reg (Earth-616) and the discussion on Gabbing Geek.