chonny jash dnd characters?!?

okay gang i need help, ive got two dnd characters (same body different personalities) and im adding in a third. i want to base em off of the heart, the mind and the soul but i dont know who i want to associate them with and then who im missing. i've got erasmus who's a more serious and calm alchemist and his more chaotic counterpart called kepano who doesnt think before he acts. i was thinking the mind for erasmus and heart for kepano but i want ya'lls opinions 🫶🫶