Devoted to You: Even before he fell for her, he was devoted body and soul to Latina and vowed to protect her from danger of unwanted suitors. Eventually evolved into Single-Target Sexuality since he doesn't waver.
Over Protective Dad: Gets clingy with Latina at times, and gets upset whenever he imagines her growing older and not needing him any longer. Especially if it's because she's going to be married off to some guy.
Papa Wolf: To Latina. Usually, it's Played for Laughs, but on occasion plays it dead straight. One example of this is after he learns of the nun who attacks and traumatized Latina into ripping off her remaining horn, and having her punished by making the church excommunicate her from all churches instead of sending her off to another one, and escaping punishment like before.
Parental Substitute: He is responsible for getting Latina to interact with the world and socializing her, but subverted. Nobody, least of all Latina, sees him as a parent since he's often away during her development. A good chunk of the story focuses on Dale having to realize this and recognize Latina as a woman.
Tranquil Fury: When he's truly angry, like say if you treated him like a child prior to the story, or if you hurt Latina in any way shape or form, watch out. You don't want to get on his bad side.
Cheerful Child: As a child, she's always cheerful and upbeat, bringing smiles to everyone around her.
Cuteness Proximity: Many of the other characters who run into her are often stricken by this. The regular bar patrons in particular end up protecting her from time to time whenever she's outside.
Clingy Jealous Girl: When she first meets Helmine, the blonde mage that Dale sometimes works with, Latina questions who she is, then hugs Dale tightly and asks him if he's going on another quest. Though she denies it, Dale can tell her mood soured upon meeting Helmine.
Friend to All Living Things: Other than cats, animals are usually very friendly towards her. Including some magical beasts near Dale's hometown.
Kiddie Kid: She was rather innocent and more naive for an eight year old. Justified due to her lack of socializing with the common world.
Nice Girl: She happens to be very sweet and kind towards everyone, which is many townsfolk come to like her despite her demon heritage and come to her defense when she was abused by a bigoted nun at school.
Protectorate: The title's not called If It's for My Girl, I'd Even Defeat a Demon Lord for nothing.
Rescue Romance: Admits she fell in love with Dale because he saved her.
Self-Harm: After a particularly nasty incident with her demon hating elementary school teacher, Latina breaks off her horns to the point where they're nubs so she could blend in with the human populace.
Parental Substitute: Eventually along with Rita, Kenneth eventually becomes Latina's true parental figure, since she stays at the Dancing Ocelot for most of her life and Kenneth is usually there to guide her. When time comes for Latina's wedding, Kenneth is even the man who walks her down the aisle.