Prez, a 19 years old woman can be seen flying and trying to kill the ogre boss. We are given a clear view of its size.
The girl herself is 15px while the ogre king is 330px.
An average korean female height is 160 cms.
15px=160cm 1px= ~10.7cm
330px= 3531cm
A normal ogre is 55px (588.5cm)