Actually, the OP was referencing the Boss Super Octave which is 1 and 2 Octaves DOWN. So, the Whammy guy is probably the closest! Octavia is Octave UP.
For Sub-Octave Fuzz, MXR Blue Box, MXR Slash Fuzz, or a Whammy + Fuzz of choice will do. Earthquaker Bit Commander is good too. Personally, I use a Boss OC-2 into a Big Muff clone.
For Octave up there are generally two schools 1) Foxx Tone Machine (get a used Danelctro French Toast for $15) or 2) Octavia.
I have owned the Dunlop Octavia, Catalinbread Octapussy, and Fender Blender and finally ended up with the Malekko Helium which ended my quest for an octave up Octavia style fuzz.