Someone who had an intense experience (a good or bad one) that changed their personality, for example.
Paulenrique's links (below) are obviously useful, but to me this is still the weirdest DL sentence yet encountered... and that's saying something!
Dear friend can you help me, please?, When do I use "another" or "other"
Hope these links help you:
Obrigado Paulo Henrique. As explicações do primeiro link são realmente ótimas. Valeu!