Just in case you haven't noticed, this week's story and the three previous are all part of the same fictional world. If I ever pitch it as a comic book, I'll call it Fearless Five (possibly with the last "s" in "Fearless" replaced by the numeral "5"--edgy!).
More plausibly, I'll probably write another connected series of 512s about these characters. Not immediately, but soon. Already thinking about how to structure a coherent overall narrative in flash-sized chunks.
Read "Stronger" at 512 Words or Fewer