Mythra is confident in herself, reckless, and independent. She has a short temper, a rude disposition, and is not afraid to openly express her thoughts. While during the events of Torna ~ The Golden Country Mythra is shown to have little sympathy for others, in Xenoblade Chronicles 2 she is much more calm and analytical.

Due to the destruction she once caused, Mythra considers herself to be a danger to others, and wants to reach Elysium alongside Pyra to beg the Architect for their death.