Here's my Undertale soul, the purple heart, which represents perseverance. Out of all of the Undertale souls, I feel that perseverance best represents me. I have lots of determination (red) and integrity (blue), so, naturally, I am perseverance (purple). I also get cloudy glasses and a torn notebook, which is awesome, and to top it all off, I attack and heal with words and comas. What else does one need?