...this here butterfly, on the other hand, is definitely unusual. The pheromones it extrudes could disrupt the mind-control powers of that arcanoborg, if used properly.
You are the very best in your field of knowledge. Define a field of study; it must be fairly narrow. Butterflies and ancient languages are both good examples. Within this narrow field, you are an absolute genius. You automatically make any knowledge rolls. If you can convince the game master that your area of expertise is somehow applicable to whatever you are doing, (fairly spoofy reasons are acceptable), you get a free bonus die on your Action Total. If you advise someone else (a 3-shot action in combat), you can give away this bonus.
You can also make truly new and revolutionary finds in your field of experience - though this rarely has much use in the game. You are an established master of your field, and your words would weight much more heavily in the academic world than those of an outsider.
This schtick is similar to Professor and ArcanotechScientist.