(spoilers for the light novel but I tried to keep them small or vague)

Gaoshun "lover of all cute things" (Maomaos words not mine). Supposed head of the family but everyone knows his wife has him whipped. He's the sword trained to protect the most important man in the country but look at him trying to pet a kitty.

Actual head of the clan, Taomei, Gaoshun's wife. She doesn't get compared to a bird of prey often for no reason. And also somewhere along the way adopted a bird of prey herself. Highly efficient and scary enough to intimidate many men stronger than her. And she pushed Gaoshun into a pool when she noticed someone saw them strolling romantically, for reasons no one can explain since he's been her husband for 20 years.

Maamei (Taomei 2.0) future head of the clan, just as sharp and cunning as her mom (also compared to a bird of prey). She manifested who she would marry when she was 8 years old and actually succeeded 8 years later. Has two different kinds of idiot brothers but looks after them. Maybe the only one who could help Basen realize his romantic feelings. Her dad thinks she hates him but Maomao notices her husband is pretty much just like Gaoshun.

Ah Baryou. In spite of having such strong willed parents, or maybe because of that, Baryou can't even look people in the eye without getting nauseous. He works for the moon prince BEHIND A CURTAIN. He needed to keep the line going so they basically told him "close your eyes and your wife will do the rest".

And Basen. Ngl he was rude and a snob at the beginning of the novel. But he has quickly become one of my fave secondary characters. He's stoic but so so noble. He will punch a guy who speaks ill of his beloved, even if he was just passing by. He will raise a goddamn duck that imprinted on him because it brings him closer to his beloved. He will jump from a sixth story building carrying his beloved princess style to save her. He will fight a fucking tiger to rescue her. He is THAT GUY. But he can't even say he likes her to her face or to anyone's face for that matter. He has built a fortress around himself scared of his inhuman strength, afraid he could never love a woman without hurting her, but his heart is gentle and pure, just ask his duck.

Bonus member:

thank you very much

one of my favorite things in the manga is anya helping loid get away for a mission but by coming up with the most embarrassing excuses possible 

The test. How Twilight ended up with Valen. Twilight was just a filly herself when she took him in. Yet another responsibility placed on such little hooves.