...ARRRGH!? At first I assumed that they we're the same class with different names (like menos class also being Adjucas), but many say they're completely different in class. Now I'm lead to believe the hogyoku causes the hollowfication from Vasto to Arrancar (like Vizards kind of) ok. However, as far as I know (and as far the anime has gone) there hasn't been any Vasto Lordes shown (except maybe Grand Fisher since he was an "incomplete arrancar" with a full mask). Toshiro is the only character to briefly describe the Vasto Class, but his explanation only lead me to deduce that Vasto are still Menos class evolved from adjuhucas in some way (cannibalization of Hollows again maybe?). The hogyoku is only known to create Arrancar and Vizard as far as I know not Vasto Lorde. *takes deep breath* Ok so how do hollows truly become Vastos and give me an example of one in the anime/manga (if there was any).