Frode himself can also possess, but his possession belongs to a branch of "Lady Cilla's Soul Blind" special ability.
He can only possess those whose souls have already left their bodies in the Soul Blind, since the original soul has left, the body he possesses is essentially half-dead. Even if the original soul is summoned back after possession, due to Frode's ability it would be tainted with a lot of death energy, and if the original owner is not a Transcendent, they basically can't survive.
Therefore, Frode's possession is not like Adar's, who can control it without harming mortals.
Frode is not bloodthirsty either; he couldn't kill mortals just for a little culinary desire. Moreover, the mortals in Star Lake Castle were sent by Neya.
Thus, Frode can only secretly envy Adar.
