I can pretty say Solid Snake introduced me to the series.
I remember for seeing the cover for Guyver 2: Dark Hero at my local Blockbuster back in '94-'95, but I quickly watched it through the Sci-Fi Channel. They played it a lot during the mid-90's. I liked the movie.
Then, during another Blockbuster visit, me and my dad found the OVAs(The Manga dub.) and I fell in love with it.
For the longest time, I only had the first 5 episodes with actually 'two' copies of Episode 4. One contained Episode 4, and another was label Episode 4 but had Episode 9's tape reel inside. About just before they started advertising for Guyver 2005, I managed to get the complete OVA on DVD.