When a traded pokemon evolves, you can change its name.
Octillery lost it's japanise name after evolving. This is just a funny glitch that happens for some odd reason.
Thank you for the class! Everyday I learn something knew.
Well... what a pitty that octilley lost its japanessee name. I love those funny characters on the pokemon nicknames. So... I hope my japanessee shieldon don't lose its name.
Thanks. =)