Board Thread:General Discussion/@comment-27907368-20160506131212/@comment-27907368-20160517035102

All of the trait names are divulged from the Snowdin Snowball Game. You'll notice the red flag doesn't get assigned a trait, but instead reads "Ball Game."

If you check the Wikia's List of Human SOULs, you'll see there is a citation needed for the red SOUL. No where in game are we told "Determination" is the red SOULs key trait.