I was trying to make a Baton Pass Espeon with HP Fire or HP Water in Gen 2 OU, but I wanted a female one for reasons (like Attract shenanigans). GSC DV and Gender magic tells that Female species of mons with a Gender ratio of 7:1 (like Espeon) can only have an Atk DV of 0 or 1, which makes HP Fire or Water have lower Base power (or even impossible, I think[?]). Akyrys bypassed this by simply not using HP, and using the move I wanted to avoid by being a female Espeon: Attract.