Musa, despite being a princess, tends to act more like a tomboy. Musa puts up a tough front in front of others, but deep down, she tends to be the most sensitive of the Winx girls, and gets hurt the most easily.
Part of that may be due to her sad family life. Musa's mother had died, and her father is often away doing tours, not having much time for his daughter, leaving Musa feeling lonely.
Despite being the fairy for all types of music, she tends to favor hip hop.
Musa often uses annoying slang.