Mura used to exclusivly stay in the underwater kingdom of the Legendarys, but when she came up to the surface she found their fashion and fell in love.
She has prosthetic legs and can sprint very fast. It's very hard to outrun her. Flying is your best option.
Her and Velvet do get along, kind of like how Sonic and Shadow get along.
She's been known to scare small kids that hang around the edge of the kingdom's lakes.