INSIDE
Io is distant and introverted, but self-confident and headstrong. She prefers to be alone and isn't very friendly, but social situations aren't too hard for her and she will not get anxious in them.
Ioyerta is not too good person. Aggressive she is not and isn't very interested in hurting anyone by herself, but she doesn't mind at all seeing someone else doing so (she may even enjoy such "show").
On the other hand, she's very dedicated and gentle to her loved ones.

Io tends to be a little bit of a grumpy granny too. She has gotten very low appreciation for youngsters and usually thinks she's more than justified to correct even their most slight traits of unwanted behaviour - and with no hesitation, even violently.

OUTSIDE
Without any doubt, Ioyerta is physically strong and enduring. Years have treated her well, without causing weakening worth mentioning.
Io's bodybuild is draft and quite masculine actually.