There's something I absolutely love about the eggs' sibling dynamics is how they've changed.
Tallulah went from being the little girl that everyone had to look after and protect to one of the most emotionally strong and strong-willed eggs. I won't forget how after Creation showed up at Philza's house on Valentine's Day Chay became deeply upset, I don't have the clip but you can see it from Phil's POV
We can see how Tallulah is armed, with her shield raised, on the defensive and stands between Creation and Chayanne. protecting him.
Let's remember that although Tallulah is not considered one of the veteran eggs, she is undoubtedly one of the first. I consider that Tallulah is one of the best eggs, she has her own personality, she has her changes, her defects and her virtues
I still remember how I went from being the little girl who had to be protected, to being a truly emotionally complex post-purgatory one.
Tallulah is still the heart, don't get wrong, she's just grown up and matured (she had character development xd)
But my favorite case is without a doubt Ramon-Leo-Dapper. They are triplets, they were really united eggs, Ramon and Dapper were generally seen playing (hitting each other) constantly and Leo was seen with them. Leo found comfort in her brothers after the death of Trump.
But not everything can last forever.
They are still triplets and they still love each other.
But Leonarda has her nephew Pepito, and her brother Roier and her dad Foolish, maybe even Richas because he is also her nephew (And she is currently among them + Sunny and Tubbo in the city of Fobo) she is no longer the extremely rich and a bit lonely one, she is still iconic and happy but now things are different. She has a lot more people around their.
The same with Dapper, the most important thing for him now is his newly revived father (which is not shocking at all, nope) and his little sister Pomme whom he loves with all his heart. Dapper is one of the eggs that has gone through the most screwed things (this egg has a longer list of kidnappings than hats) and therefore one of the strongest but above all hopeful with the idea that it will have peace in this new beginning.
Ramon, oh Ramon, you could make a bible just about Ramon, the relationship he had with Spreen and the impact that had on his relationship with Fit. How now he is no longer alone; he has two little hermanitas whom he adores; Sunny and Empanada, a big brother figure in Tubbo and two loving parents who love each other.
He went from being locked up to having sleepovers every night with his dear little sisters, spending the mornings in Tubbo's factories, learning single words in Portuguese with his dad Pac and going on adventures with his dad Fit.
If Leo were to place Pepito over his brothers (because sometimes he feels that Pepito is very coded as a little boy) it would hurt her bad, but they would understand because Pepito is Leo's family.
When Ramon came between Leo and Sunny, he didn't do it out of choice, he did it to protect his little sister, Diamond Girl, because Sunny is Ramon's family.
If Dapper could have chosen an egg to be freed from purgatory, he would not have chosen himself, he would have chosen Pomme, because Pomme is Dapper's family.
and that doesn't stop them from being family to each other.