Published across Tales of the TMNT (Vol. 2) was a 6-part series of character-themed TMNT vignettes by author Will Tupper. However, having been scattered about the publication of that series (and two delayed installments only being published in the unofficial
TMNT Vol. 3 #24), keeping them all straight could be a little difficult. Also, I imagine a lot of folks didn't even realize those back-ups were part of a thematic series.
So for convenience, here's a listing of all the vignettes:
*"
The Mother of All Anger" (Raphael and April O'Neil)
*"
Credo" (Donatello)
*"
Secret Spirit" (Leonardo)
*"
Fathers and Daughters" (Casey Jones and Shadow Jones)
*"
Practical Jokes" (Michelangelo)
*"
Conflict Resolution" (Casey Jones and Raphael)