This is my stock in trade at conventions. I suggest:
*Pre-gen sheets with a short roleplaying description (if it includes a character from popular fiction to cue off of, so much the better)
Example: Master Po (6 Cha D&D PC)
Rude, crude and loud, you have no time for more than the minimum of pleasantries. Life is for learning, not for bowing. Shouting gets your point across better when you’re short.
Example: Fjalar Clockwright (dwarf dual-wielding pistols)
If you can build something, great! If you can take it apart? Even better. You are the mad tinkerer. Think Doc Emmet Brown from Back to the Future, or maybe just Yosemite Sam.
*Take a leaf from the RPG's book. Hand out folded cardstock. PCs write their character name large and their real first name or nickname small and in parentheses below it. This allows for rapid identification.
*Have a single sheet of necessary rules that players who aren't familiar will need as a handout. One for everyone.
Elements that are fun for everyone means "something for all the players to do". I take that to mean that you should write the PC sheets with gaps and overlaps. If the adventure requires fingerprinting, one PC should be great at it, and one should be decent (as a backup for bad roles).
For the adventure itself? Urk. Never saw the show. I like Barsoomcore's suggestion that you mix up the genres, or at least explain in the blurb what's attractive about it. Are you running this for horror horror or for laughs? That will dictate a lot of ideas.
