Ah, yes, let's see. Peri sucks, Keaton sucks, Henry sucks, Tharja sucks, Rhajat sucks, Nah sucks, Severa/Selena sucks, Kjelle sucks, Rosado sucks, Nagi sucks, Ilyana sucks, Niles sucks, Nina sucks, Soleil sucks, Azama sucks...
I do not like any of those characters one little bit. Some of them are the kind of people I'd seriously want to punch in real life (Severa, Kjelle, Azama), some of them are literal murderous psychopaths who shouldn't be in your army in the first place (Peri, Keaton, Henry), some of them are plain obnoxious (Rosado), some of them have simply zero character (Nagi), some of them are extremely manipulative or abusive (Nah, Tharja, Rhajat), some of them take certain sexual things way way way way way too far (Soleil, Niles, Nina), or they are a combination of some/all of those (various of who I've mentioned).