Re: Evil Schemes for the Average Megalomaniac
Does the Atomic Khan work alone? Or, like Dr. Destroyer, does he have a private army? If so, and if you don't mind a bit of a bait and switch, I'd try something like this:
There is a crime wave in the city, with nightly thefts of large amounts of mundane items. Three tons of rhinestones from a costume jewelry factory, 1000 cubic yards of synthetic batting from a mattress manufacturer, 2000 gallons of dish soap, etc. The heroes are brought in when a witness at the latest theft reports that the thieves were soldiers of the Atomic Khan! Further investigation at other thefts will turn up corroborating evidence. You can throw in twists and turns, confounding your players with the random nature of the thefts, maybe throwing out hints of dire concoctions that can be made by combining rhinestones and dish soap, with a final confrontation with the Atomic Khan himself! After a hard fight, they take the Khan down -- only to find out he's a robot! A robot put in place who knows how long ago, but long enough for his programming to degrade.
Ok, maybe not the best idea, but at least you wouldn't have to worry about not portraying the Atomic Khan as a genius...