Turbographixs-16 
I actually recently found the EGM with the Lords Of Thunder Sega-CD review and one of the losers(
awful reviews) actually spelled it like that.
As soon as I saw it I thought "that's got to be the worst spelling of TurboGrafx-16 that I've ever seen".

I mean, I can see spelling it with 'ph' in stead of 'f', but to still use 'ix' instead of just 'x', all in the same instance, when you're a professional video game journalist working for the biggest gaming magazine during the height of the 16-bit generation?

Wow, this is a tough call. VolfieV or VolfieD?
VolfieV is definitely cooler and is how it should be spelled in english, but we can still pronounce it "Volfied".
