Baldr, the God of Light, was Odin and Frigga's biological son, their eldest child, and Asgard's first heir.
When it came to Odin's private life in his youth, Su Ming did not quite know how to explain it to Carol, so he simply skipped over it. That old man might not have gone after cows and mares like Zeus next door, but he had likewise enjoyed spreading his seed everywhere and had been obsessed with all kinds of female giants.
There was no other reason for it. Female giants were often over ten meters tall, weighed dozens of tons, possessed formidable combat strength, lived in mud pits or lava, and had thick layers of filth armor covering their bodies as protection.
Odin believed that only a powerful man who conquered powerful women could produce even stronger offspring.
In short, Thor actually had a great many siblings from his generation. Most of them were mixed-blood children of Odin and wild giants. Thor himself did not even know they existed. Some of those siblings had died long ago, while others had simply vanished from the "story," even being erased from everyone's memories.
As for the brother and sister Thor currently knew to still be alive, neither of them was actually related to him by blood.
Loki was a Frost Giant infant Odin had picked up, while Hela was an elder sister fabricated by storybooks.
Returning to Baldr, he was of mixed Aesir and Vanir blood. Back then, he represented the formal integration of the two divine clans, as well as the future of Asgard's power.
He inherited Odin's powerful physique and Frigga's talent for magic. It was said that when he was born, the light in the delivery room illuminated all of Asgard.
Generally speaking, an auspicious phenomenon descending from the heavens