User blog comment:Epic~00/Total Drama Island Edgic/@comment-27447405-20160717003051/@comment-31556666-20160717212448

Ok to explain again, a character's personality in an episode gets its own abbreviation in an episode. For example, Geoff gets OTTP5 in Tri By Tri-Armed Triathlon because he's over the top positive, has a high visibility, etc. UTR would mean the character doesn't appear too much, MOR means they kind of just consistently appear in a straightforward and easy to understand manner. CP means they're fleshed out and have a complex personality. INV means they get zero screentime. Positive and negative  (P and N) also are to show whether the character is shown in a positive or negative light. In some cases P/N aren't used at all, eg a majority of Izzy's eps since she's usually not a positive or negative character. There's also M for mixed which means they get both positive and negative screentime.

Don't know I can explain it any better.