It was indeed a tough one. At first I was going to vote for j, but then I stopped to think about it for a bit...and finally I decided to just go with it.
Lowercase j is brilliant in its deception. "This looks like an innocuous letter," the unsuspecting viewer thinks, but then visual information - and letters are basically just a visual thing - introduce the curveball: why, there's some manner of small curve residing at the bottom of that letter! Could this be the awesome power of j? Rocked from the very perch of their suppositions, the potential writer is rendered docile and compliant - more easily convinced to add accentuating flair to their characters. Thus cowed and subjected, they can be exploited for essays, and later articles and books. The endless waltz continues.