Very simple game concept. I like when things are simple. After a few plays I started getting more familiar with the characters, which made it easier to answer the questions. If each play had other characters it would make me have to study them more. Perhaps different variations of the same characters could be shown. So it would really force you to study them during each question if they were subtle differences from the last time you played. I few times I got the same question three times in a row, which tells me that you are randomly pulling questions. One method I like to use is to first randomly sort my array of items, then as they are being used I remove them from the array. This guarantees that the same question doesn't show twice. Then one new game, you reset the array and randomly sort it again.
I think you have a great concept here and I hop e you continue to add to it. Hit me up if you do decide to continue and I'd be happy to check it out.
Nice work!