My dear Lord Gortog, might I suggest you go with the ever-popular hollowed-out volcano? Some might say such a fortress is trite or cliché, but I prefer to think of it more as a classic work of design, outlasting the waves of fads and pop culture.
As an added bonus, when your evil plans fail - an inevitable fact that all we evil supergeniuses must eventually face up to, damn those superheros! - you can always use the classic "escape in cryostasis pod and detonate base behind you" ploy to go out in style! Nothing says "hip" like chunks of molten lava!
As an added bonus, when your evil plans fail - an inevitable fact that all we evil supergeniuses must eventually face up to, damn those superheros! - you can always use the classic "escape in cryostasis pod and detonate base behind you" ploy to go out in style! Nothing says "hip" like chunks of molten lava!