You certainly can anon!! I’ll do 3 at a time, starting with the original trio~

Seilby - Son of Soul and Kid Sei was the first child of the family, and the first oddity. His hair is black at the roots and rapidly grows out to while, and as a teen he shaves the left side of his head to have stripes (Kid is mortified). He’s a weapon, however his scythe gene is highly unstable and ever since he was young, scythe blades would protrude from his body without warning. Because of this, he also trains as a meister. 

Allie - Child of Maka and SoulThe second child of the family, second with sharp teeth, second weapon, but first to have the devotion of a crazed grandparent. Not only were they Maka’s first child, but they also managed to inherit Spirit’s red hair. Allie is laid-back jokester, who surprised everyone when her weapon form turned out to be a shield and not a scythe. She and Seilby are extremely close, sharing support and joy between each other. Maka often says that Allie probably managed to chose her weapon type, so she could be close to Sei, who was afraid of injuring others with his own power.

Kanti - Child of Crona and MakaFrom the first suggestion, Crona had always been nervous about having a child, due to their own upbringing. However with support from all their partners, Kanti came to be. Growing up with Crona’s worry has caused them to be reserved and nervous, but studious and curious as well. They love being with heir older siblings, even if they get up to a lot of trouble. Kanti also has some affiliation with magic, however Crona would rather they not delve too deep into their witch heritage.